Consider this solution to a problem.
Problem:  -4(6 - y) + 4 = -4
Step 1:  -24 - 4y + 4 = -4
Step 2:  -20 - 4y = -4
Step 3:  -4y = 16
Step 4:  y = 4

Choose the number of the step where the first mistake was made.
​Then, solve the equation correctly.

Which graph best represents the solution to the system?
x + y ≤ 6
​x + 2y ≤ 8

The formula for the rate at which water is flowing is
         v
R =  ---  ,  where
         t

- R is the rate
- V is the volume of water, measured in gallons (g)
- t is the amount of time, in seconds (s), for which the water was measured

Select an appropriate measurement unit for rate:

A.)  gs

         g
B.)   ---
         s

         s
C.)   ---
         g

         1
D.)  -----
        sg

A store sells used and new video games.  New video games cost more than used video games.  All used video games cost the same.  All new video games cost the same.

Omar spent a total of $84 on 4 used video games and 2 new video games.  Sally spent a total of $78 on 6 used video games and 1 new video game.  Janet has $120 to spend.

Find the number of used video games Janet can purchase after she purchases 3 new video games.

A train travels 250 miles at a constant speed (x), in miles per hour.
Enter an equation that can be used to find the speed of the train, if the time to travel 250 miles is 5 hours.

Consider the right triangle.

Enter the equivalent to sin (B).

Which inequality represents all possible solutions of  -6n < -12 ?
A.)  n < 72
B.)  n > 2
C.)  n < 2
​D.)  n > 72

Enter an expression equivalent to:
(3x² + 2y² - 3x) + (2x² + y² - 2x) - (x² + 3y² + x)
​

Select the expression that is equivalent to m² - 25.
A.)  (m² - 10m + 25)
B.)  (m² + 10m + 25)
C.)  (m - 5)(m + 5)
D.)  (m - 5)²