Expressions, Equations, and Functions

Explain why an open sentence always has at least one variable.

CHALLENGE Find all of the solutions of $x^2+5=30$.

STATISTICS A researcher wants to find out how often teens in her town exercise. Which sample group should she survey to get results that best represent all the teens in the town?

1. a summer baseball league
2. her nieces and nephews
3. high school students were chosen at random
4. the teens at the mall one Saturday afternoon

The expected attendance for the Drama Club production is 65% of the student body. If the student body consists of 300 students, how many students are expected to attend?

A zoo has about 500 children and 750 adults visit each day. Write an expression to represent how many visitors the zoo will have over a month.

Find the value of p in each equation. Then name the property that is used. (Lesson 1-3)

Find each sum or difference, (Lesson 0-4)

1.14 + 5.6

Find each sum or difference, (Lesson 0-4)

4.28 – 2.4

Find each sum or difference

8 – 6.35

Find each sum or difference, (Lesson 0-4)

$\frac{4}{5}+\frac{1}{6}$

Find each sum or difference, (Lesson 0-4)

$\frac{2}{7}+\frac{3}{4}$

Find each sum or difference, 

$\frac{6}{8}-\frac{1}{2}$

Find the mean, median, and mode for each set of data.

{1, 2, 3, 5, 5, 6, 13}

Find the mean, median, and mode for each set of data.

{3, 5, 8, 1, 4, 11, 3}

Find the mean, median, and mode for each set of data.

{52, 53, 53, 53, 55, 55, 57}

Find the mean, median, and mode for each set of data.

{8, 7, 5, 19}

Find the mean, median, and mode for each set of data.

{3, 11, 26, 4, 1}

Find the mean, median, and mode for each set of data.

{201, 201, 200, 199, 199}

Find the mean, median, and mode for each set of data.

{4, 5, 6, 7, 8}

Find the mean, median, and mode for each set of data.

{3, 7, 21, 23, 63, 27, 29, 95, 23}

Find the mean, median, and mode for each set of data.

{4, 7, 11, 19, 26, 26, 32}

Find the mean, median, and mode for each set of data.

{62, 65, 67, 68, 73, 80, 81, 83, 99}

Find the mean, median, and mode for each set of data.

{17, 9, 10, 17, 18, 5, 2}

Find the mean, median, and mode for each set of data.

{33, 38, 29, 25, 41, 40}

Question: Find the mean, median, and mode for each set of data.

{10, 9, 8, 7, 6, 5, 4}

Find the mean, median, and mode for each set of data.

{111, 109, 112, 114, 119, 112}

The table shows the cost of some school supplies. Find the mean, median, and mode costs.

The table shows the number of servings of fruits and vegetables that Cole eats in one week. Find the range, median, lower quartile, and upper quartile.

Bill's scores on his first four science tests are 86, 90, 84, and 91. What must Bill earn on the fifth test so that his average (mean) will be exactly 88?

Bowling Sue's average for 9 games of bowling is 108. What is the lowest score she can receive for the tenth game to have an average of 110?

Olivia has an average score of 92 on five French tests. If she earns a score of 96 on the sixth test, what will her new average score be?

JOBS The number of hours Maria and her friends each work at their part-time jobs is 20, 10, 8, 5, 25, 12 and 10 hours. Find the average amount of time Maria and her friends work at their jobs to the nearest hour.

MOVIES At a movie theatre, ten movies are playing and their lengths are 105, 95, 115, 120, 150, 130, 100, 125, 110, and 135 minutes. Find the average length of a movie playing at this theatre to the nearest tenth.

The heights of players of a girls' basketball team are shown. Find the average height of the team to the nearest tenth.

Write an equation that involves two or more operations with a solution of – 7.

Express $\left\{\left(4,-3\right),\left(3,2\right),\left(-4,1\right),\left(0,-3\right)\right\}$ as a table, a graph, and a mapping.

Express each relation as a table, a graph, and a mapping. Then determine the domain and range.

$\mathbf{\left\{}\mathbf{\right(}\mathbf{4}\mathbf{,}\mathbf{3}\mathbf{)}\mathbf{,}\mathbf{(}\mathbf{-}\mathbf{2}\mathbf{,}\mathbf{2}\mathbf{)}\mathbf{,}\mathbf{(}\mathbf{5}\mathbf{,}\mathbf{-}\mathbf{6}\mathbf{\left)}\mathbf{\right\}}$

Express each relation as a table, a graph, and a mapping. Then determine the domain and range.

$\mathbf{\left\{}\mathbf{\right(}\mathbf{5}\mathbf{,}\mathbf{-}\mathbf{7}\mathbf{)}\mathbf{,}\mathbf{(}\mathbf{-}\mathbf{1}\mathbf{,}\mathbf{4}\mathbf{)}\mathbf{,}\mathbf{(}\mathbf{0}\mathbf{,}\mathbf{-}\mathbf{5}\mathbf{)}\mathbf{,}\mathbf{(}\mathbf{-}\mathbf{2}\mathbf{,}\mathbf{3}\mathbf{\left)}\mathbf{\right\}}$

Identify the independent and dependent variables for each relation.

Mike’s cell phone is part of a family plan. If he uses more minutes than his share, then there are flower minutes available for the rest of his family.

Identify the independent and dependent variables for each relation.

Julian is buying concert tickets for himself and his friends. The more concert tickets he buys the greater the profits.

Identify the independent and dependent variables for each relation.

Describe what is happening in each graph

The graph represents the distance the track team runs during a practice

Describe what is happening in each graph

The graph represents revenues generated through an online store.

Identify the dependent and independent variables for the given relation.

The Spanish classes are having a fiesta lunch. Each student that attends is to bring a Spanish side dish or dessert. The more students that attend, the more food there will be.

Identify the dependent and independent variables for the given relation.

The faster you drive your car, the longer it will take to come to a complete stop.

Describe what is happening in each graph.

The graph represents the height of a bungee jumper.

Describe what is happening in each graph.

The graph represents the sales of lawnmowers.

The graph represents the value of a rare baseball card.

Name the ordered pair at point A and explain what it represents.

Name the ordered pair at point B and explain what it represents.