Cumulative Exam — Cumulative exam Answers

When Nancy started middle school, she was 60 inches tall. When she started high school, she was 66 inches tall. What was the percent change in her height?

Duncan shares 20 percent of all of his sales commissions with his personal assistant. If Duncan earns x dollars in commissions and gives his assistant y dollars, which equation correctly models this situation?

What is the sale price of a phone that was originally $199 but that has been marked down by 15 percent?

Selina and three of her classmates each wrote out the steps for finding an approximate percent change. They all agreed on the first and fourth step: 1. Find the positive difference between the original number and the new number.2. ________________________3. ________________________4. Round the answer if necessary.They did not agree on steps 2 and 3. Which instructions are correct for steps 2 and 3?

Carmen is simplifying the expression . She recognizes that 0.93 and 0.07 will combine to equal 1, so she would like to find that sum before she adds 6.21. Which property will allow Carmen to do this without changing the value of the expression?

Guillermo used the fact that a highway bus traveled 275 miles in 5 hours to find the unit rate. How can he check his answer?

Talia gave her hairdresser a 20 percent tip, which amounted to $7. PercentsTotal 100% What was the price of the service before the tip?

Allison is evaluating the expression using integer tiles. She begins with 5 negative tiles as shown.What should Allison do next to find the value of the expression?

The large rectangle was reduced to create the small rectangle. Not drawn to scaleWhat is the missing measure on the small rectangle?

What is k equal to if ?