Quiz 1: Review

Evaluate (-½·3)³ 27/8 -9/8 -27/8

-27/8

Which of the following is the simplified form of the expression?-6a - 4a + 7a 5 a 3 a -3 a -5 a

-3 a

x(x - 3) - 4(x2 + 7)

-3x^2 - 3x - 28

What is the slope of the line passing through the points (-5, 7) and (-3, 5)? 1 -1 -1/4

-1

5x+7y=312x+4y=16 Which of the following systems could be used to solve the given system of equations by the addition method? 10x + 14y = 31 and -10x - 20y = 16 -10x - 14y = -62 and 10x + 20y = 80 10x + 14y = 62 and 10x + 20y = 32

-10x - 14y = -62 and 10x + 20y = 80

5-2= 1/25 -25 25

1/25

If f(x) = 3x 2 + 1 find f(6). 109 5/3 325

109

Solve -5 + 4x = 29 6 17/2 -6

17/2

Evaluate 3(6)-4| - 6|÷8 + |-8| 23 10 53/4

23

Evaluate 6 + 9÷3·6 6.5 24 30

24

Which of the following equations is of a line whose slope is 3/4 and y-intercept is 6? 3x - 4y = 6 3x - 4y = -24 3x - 4y = -6

3x - 4y = -24

Simplify the following expression.

3x^5 y^2

Evaluate |8| + |-3| - 7(-5) 46 -24 -20

46

One number is 4 less than 3 times another number. If their sum is 16, find the numbers. Which of the following equations could be used to solve the problem if x represents a number? 3x - 4 = 16 4x - 4 = 16 4x - 12 = 16

4x - 4 = 16

Solve 2(a + 7) = 5a - 13 1/3 20/3 9

9

6(2 + x) = 12 + 6x illustrates the associative property commutative property distributive property

distributive property

The solution set for |2x - 1| = 15 is {-8, 8} {-7, 8} {8}

{-7, 8}

List all the subsets of {3,4,7}.

{empty set},{3},{4},{7},{3,4},{3,7},{4,7}{3,4,7}.

Solve |3x+9|<12 {x| - 7 {-7, 1} {x|x<1 or x> - 7}

{x| - 7

A marathon runner runs at the rate of 9 mph for the complete course. A track man runs at 12 mph. If together they run for 3 hrs., 1 min. to complete a total of 28 miles, how far did the marathon runner run? 20 4/5 miles 24 3/5 miles 21 miles

24 3/5 miles

Evaluate 2a 2 - b³ for a = 4 and b = -3 59 5 91

59

(2y)(2y)(2y)

8y^3

Determine whether the following system of equations has one solution, no solution, or an infinite number of solutions. Explain your reasoning. 2x−4y=10

This system of equations has one solution because the equations have different slopes. The slope of 2x - 4y = 10 is 1/2 . The slope of 7x - 9y = 12 is 7/9.

Solve |x - 7|>3 {x|4 {x|x<4 or x>10} {x|x<-10 and x>10}

{x|x<4 or x>10}