Algebra 1 | Unit 5 | Lesson 14: Recalling Percent Change | Practice Problems

A person's salary is $2,500 per month. She receives a 10% raise. What is her new salary, in dollars per month?

A test had 40 questions. A student answered 85% of the questions correctly. How many questions did the student answer correctly?

A telephone cost $250. The sales tax is 7.5%. What was the cost of the telephone including sales tax?

In June, a family used 3,500 gallons of water. In July, they used 15% more water. Select all the expressions that represent the number of gallons of water the family used in July.

Han’s summer job paid him $4,500 last summer. This summer, he will get a 25% pay increase from the company. Write two different expressions that could be used to find his new salary, in dollars.

Is the average rate of change a good measure for how the amount of the chemical in the pond has changed over the week? Explain your reasoning.