Chapter 2

Elementary Algebra · 775 exercises

Problem 1

Evaluate. \(2 x+7,\) where \(x=-4\)

3 step solution

Problem 1

Determine whether the given number is a solution to the given inequality. $$ 2 x-3<6 ; \quad x=-1 $$

4 step solution

Problem 1

Graph all solutions on a number line and provide the corresponding interval notation. $$ x \leq 10 $$

4 step solution

Problem 1

Express each ratio in reduced form. 100 inches : 250 inches

4 step solution

Problem 1

Translate the following into algebraic equations. The sum of a number and 6 is 37 .

4 step solution

Problem 1

Is the given value a solution to the linear equation? $$ x-6=20 ; x=26 $$

5 step solution

Problem 1

Multiply. $$ 3(3 x-2) $$

4 step solution

Problem 1

List all of the coefficients and variable parts of the following expressions. $$ 4 x-1 $$

3 step solution

Problem 2

Evaluate. \(-4 x+1,\) where \(x=-2\)

4 step solution

Problem 2

Determine whether the given number is a solution to the given inequality. $$ -3 x+1 \leq 0 ; \quad x=-2 $$

3 step solution

Problem 2

Graph all solutions on a number line and provide the corresponding interval notation. $$ x>-5 $$

4 step solution

Problem 2

Express each ratio in reduced form. 480 pixels : 320 pixels

5 step solution

Problem 2

Translate the following into algebraic equations. When 12 is subtracted from twice some number the result is \(6 .\)

5 step solution

Problem 2

Is the given value a solution to the linear equation? $$ y+7=-6 ; \quad y=-13 $$

3 step solution

Problem 2

Multiply. $$ 12(-5 y+1) $$

4 step solution

Problem 2

List all of the coefficients and variable parts of the following expressions. $$ -7 x 2-2 x+1 $$

3 step solution

Problem 3

Evaluate. \(23 y-12,\) Where \(y=35\)

4 step solution

Problem 3

Determine whether the given number is a solution to the given inequality. $$ 5 x-20>0 ; x=3 $$

5 step solution

Problem 3

Graph all solutions on a number line and provide the corresponding interval notation. $$ x>0 $$

3 step solution

Problem 3

Express each ratio in reduced form. 96 feet : 72 feet

4 step solution

Problem 3

Translate the following into algebraic equations. Fourteen less than 5 times a number is \(1 .\)

5 step solution

Problem 3

Is the given value a solution to the linear equation? $$ -x+5=17 ; x=12 $$

5 step solution

Problem 3

Multiply. $$ -2(x+1) $$

4 step solution

Problem 4

Evaluate. \(-34 y+53,\) where \(y=23\)

3 step solution

Problem 4

Determine whether the given number is a solution to the given inequality. $$ 12 x+1>-34 ; \quad x=-14 $$

5 step solution

Problem 4

Graph all solutions on a number line and provide the corresponding interval notation. $$ x \leq 0 $$

4 step solution

Problem 4

Express each ratio in reduced form. 240 miles4 hours

4 step solution

Problem 4

Translate the following into algebraic equations. Twice some number is subtracted from 30 and the result is \(50 .\)

4 step solution

Problem 4

Is the given value a solution to the linear equation? $$ -2 y=44 ; y=11 $$

3 step solution

Problem 5

Evaluate. \(b_{2}-4 a c,\) where \(a=5, b=-2,\) and \(c=12\)

5 step solution

Problem 5

Determine whether the given number is a solution to the given inequality. $$ -5<7 x+1<9 ; x=0 $$

4 step solution

Problem 5

Simplify. $$ x^{2}-y_{2}+2 x_{2}-3 y $$

2 step solution

Problem 5

Graph all solutions on a number line and provide the corresponding interval notation. $$ x \leq-3 $$

3 step solution

Problem 5

Express each ratio in reduced form. 96 feet 3 seconds

3 step solution

Problem 5

Translate the following into algebraic equations. Five times the sum of 6 and some number is 20 .

5 step solution

Problem 5

Is the given value a solution to the linear equation? $$ 4 x=-24 ; x=-6 $$

5 step solution

Problem 5

List all of the coefficients and variable parts of the following expressions. $$ 13 y 2-12 y+57 $$

4 step solution

Problem 6

Evaluate. \(b_{2}-4 a c,\) where \(a=-14, b=-1,\) and \(c=-3\)

6 step solution

Problem 6

Determine whether the given number is a solution to the given inequality. $$ -20 \leq-3 x-5 \leq-10 ; x=5 $$

5 step solution

Problem 6

Graph all solutions on a number line and provide the corresponding interval notation. $$ x \geq-1 $$

5 step solution

Problem 6

Express each ratio in reduced form. 6,000 revolutions4 minutes

4 step solution

Problem 6

Translate the following into algebraic equations. The sum of 5 times some number and 6 is 20 .

5 step solution

Problem 6

Is the given value a solution to the linear equation? $$ 5 x-1=34 ; x=-7 $$

5 step solution

Problem 6

Multiply. $$ -35(10 x-5) $$

4 step solution

Problem 6

List all of the coefficients and variable parts of the following expressions. $$ -4 a 2 b+5 a b 2-a b+1 $$

3 step solution

Problem 7

Simplify. $$ 15 a-34 b+315 a-12 b $$

2 step solution

Problem 7

Determine whether the given number is a solution to the given inequality. $$ x<-3 \text { or } x>3 ; x=-10 $$

4 step solution

Problem 7

Graph all solutions on a number line and provide the corresponding interval notation. $$ -4

3 step solution

Problem 7

Google's average 2008 stock price and earnings per share were \(\$ 465.66\) and \(\$ 14.89\), respectively. What was Google's average price-to-earnings ratio in 2008 ? (Source: Wolfram Alpha)

5 step solution

Problem 7

Translate the following into algebraic equations. When the sum of a number and 3 is subtracted from 10 the result is \(5 .\)

6 step solution

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