Solving Linear Equations Review

A

1

The average walking speed is 3 miles per hour.  How fast is this in feet per second?

4.4 feet per second

2

Find all values of x.

|x - 4|  =  13

x  =  17

x  =  -9

3

Find all values of x.

3(2x - 1) + 6  =  9(2x + 5)

x = -6

4

What two animals are responsible for the most human deaths in history?

Mosquitos and humans

B

1

To what planet do the moons Phobos and Deimos belong?

Mars

2

Solve the following formula for x.

y  =  4x - 3

x = (y + 3)/4

3

What is the percent change if there were 15 students in a class in 2021, and 18 students in the class in 2022?

20% increase

4

Find all values of x.

(x - 1)/(x + 1) = 1/2

x = 3

C

1

How many minutes are in one week?

10,080 minutes

2

How many is in a "baker's dozen"?

13

3

Solve the following formula for r.

d  =  rt

r = d/t

4

Find all values of x.

-2|x|  =  -14

x  =  7

x  =  -7

D

1

Find all values of x.

4x - 5 + 2(x + 3)  =  5(x - 3) + 18

x = 2

2

Are any of these ratios proportional to each other?

3/5....(50)/80....(20)/32....(30)/100

50/80 = 20/32

3

What color is math?  (There is only one correct answer.)

Red

4

What is the percent change if a collectible was worth $5 one year, and then $12 the next?

140% increase