Performance Task: Going on a Round Trip — Unit test Answers

What is the additive inverse of the expression below, where a and b are real numbers?

A water tank has 22 gallons of water. It begins to receive 26 gallons per hour for a number of hours. If the tank needs to fill to at least 516 gallons, which of the following is the minimum number of hours the tank should continue filling?

How many liters of water should be evaporated from 60 liters of a 28% salt solution so that the remaining solution contains 32% salt?

The cost of producing x soccer balls in thousands of dollars is represented by h(x) = 5x + 6. The revenue is represented by k(x) = 9x – 2. Which expression represents the profit, (k – h)(x), of producing soccer balls?

Which property of real numbers is shown below?

Which of the following is an odd function?

The graph shows the distance in miles of a runner over x hours. What is the average rate of speed over the interval [9, 11]?

Cheryl has $56 and wants to buy as many notebooks as she can to donate to her school. If each notebook costs $1.60, which inequality shows n, the maximum number of notebooks she can buy with her money?

Which graph shows all the values that satisfy

The height in feet, h, of a model rocket t seconds after launch is given by the equation . The average rate of change in h(t) between t = 1 second and t = 3 second is 6. What does the average rate of change tell you about the rocket?