Chapter 2

You own 18 shares of stock in a computer company. The total value of the shares changes by \(-\$ 3.06 .\) By how much does the value of each share of stock change?

Find the sum of the matrices. $$ \left[\begin{array}{rr} 6.2 & -1.2 \\ -2.5 & -4.4 \\ 3.4 & -5.8 \end{array}\right]+\left[\begin{array}{rr} 1.5 & 9.2 \\ 6.6 & -2.2 \\ 5.7 & -7.1 \end{array}\right] $$

Find the terms of the expression. Evaluate the function \(y=-x-3\) for these values of \(x:-2,-1,0,1,\) and 2 Organize your results in a table. Describe the pattern.

Evaluate the expression. $$|-103|$$

Use the distributive property and mental math to simplify the expression. $$ 3 x^{2}+4 x+8-7 x^{2} $$

Find the odds of randomly choosing the indicated letter from a bag that contains the letters in the name of the given state. G; VIRGINIA

Use a number line to find the sum. $$-4+5$$

Find the quotient. $$-51 \div(-17)$$

Find the product. $$(-8)(3)$$

Find the sum of the matrices. $$ \left[\begin{array}{rrr} 2 & 9 & -3 \\ 1 & 8 & -2 \\ -3 & -1 & -7 \end{array}\right]+\left[\begin{array}{rrr} -2 & -6 & 4 \\ -1 & -2 & 5 \\ 2 & 0 & 8 \end{array}\right] $$

Find the difference. $$ 4-9 $$

Tell whether you would use a positive number or a negative number to represent the velocity. The velocity of a rising rocket.

Use the distributive property and mental math to simplify the expression. $$ 8 t^{2}-2 t+5 t-4 $$

The probability of randomly choosing a club from a deck of cards is 0.25.

Use a number line to find the sum. $$-10+4$$

Find the quotient. $$45 \div(-9)$$

Find the product. $$(4)(-4)$$

Find the difference of the matrices. $$ \left[\begin{array}{rr} 8 & -3 \\ 4 & -1 \end{array}\right]-\left[\begin{array}{rr} 7 & 7 \\ -2 & -5 \end{array}\right] $$

Find the difference. $$ 6-13 $$

Tell whether you would use a positive number or a negative number to represent the velocity. The velocity of a falling raindrop.

Use the distributive property and mental math to simplify the expression. $$ -6 w-12-3 w+2 x^{2} $$

Use a number line to find the sum. $$-5+8+(-2)$$

Find the quotient. $$-24 \div 4$$

Find the product. $$(20)(-65)$$

Find the difference of the matrices. $$ \left[\begin{array}{rr} 4 & 3 \\ -12 & -10 \end{array}\right]-\left[\begin{array}{rr} -6 & 1 \\ -4 & 2 \end{array}\right] $$

Find the difference. $$ 8-(-5) $$

Graph the numbers on a number line. Then write two inequalities that compare the two numbers. \(-6\) and 4

LOGICAL REASONING Decide whether the statement is true or false If false, rewrite the right-hand side of the equation so the statement is true. $$ 3(2+7) \stackrel{?}{=} 3(2)+7 $$

Use a number line to find the sum. $$2+(-9)+3$$

Find the quotient. $$49 \div(-7)$$

Find the product. $$(-1)(-5)$$

Find the difference of the matrices. $$ \left[\begin{array}{rr} -4 & 1 \\ 0 & -13 \\ 2 & -8 \end{array}\right]-\left[\begin{array}{rr} -6 & 3 \\ -5 & 8 \\ 2 & -7 \end{array}\right] $$

Find the difference. $$ -2-(-7) $$

Graph the numbers on a number line. Then write two inequalities that compare the two numbers. $$-6.4 \text { and }-6.3$$

Use a number line to find the sum. $$-5+8+\left(-3 \frac{1}{2}\right)$$

Find the quotient. $$64 \div(-8)$$

Find the product. $$(-7)(-1.2)$$

Find the difference of the matrices. $$ \left[\begin{array}{rrr} -5 & 11 & -2 \\ -10 & 4 & 6 \end{array}\right]-\left[\begin{array}{rrr} -3 & 0 & 2 \\ 8 & -5 & -1 \end{array}\right] $$

Find the difference. $$ -11-8 $$

Graph the numbers on a number line. Then write two inequalities that compare the two numbers. \(-7\) and 2

LOGICAL REASONING Decide whether the statement is true or false If false, rewrite the right-hand side of the equation so the statement is true. $$ 7(15-6) \geq 7(15)-7(6) $$

You toss a six-sided number cube 20 times. For twelve of the tosses the number tossed was 3 or more. a. What is the experimental probability that a number tossed is 3 or more? b. What are the odds that a number tossed is 3 or more?

Find the sum. $$-4+6$$

Find the quotient. $$-99 \div 9$$

Find the product. $$(-11)\left(\frac{1}{8}\right)$$

Use mental math to find a, b, c, and d. $$ \left[\begin{array}{rr} 3 a & 5 b \\ c-6 & d \end{array}\right]=\left[\begin{array}{rr} -12 & -5 \\ 1 & -3 \end{array}\right] $$

Find the difference. $$ 24-39 $$

Graph the numbers on a number line. Then write two inequalities that compare the two numbers. $$-0.1 \text { and }-0.11$$

A sea turtle buries 90 eggs in the sand. From the 50 eggs that hatch, 37 turtles do not make it to the ocean. What is the probability that an egg chosen at random hatched and the baby turtle made it to the ocean?

Find the sum. $$17+35$$