Percent Increase and Decrease — Cumulative exam Answers

Jillian is using integer tiles to add . She uses the steps below.Step 1Step 2Step 3Step 4Jillian has made an error. In which step does it occur?

What is the quotient?

Theo used a map that had a ratio of to plan a road trip. He found that the distance on the map from New York City, NY, to Washington, DC, was 14.4 centimeters. How many miles would he have to drive to make that trip?

What is the sum of 16.87 + (–98.35)?

Which expression is equivalent to –21.8 – (–18.3)?

Frida applied the steps below to find the product of (–1.2)(–9.4).Step 1: (–1.2)(–9.4) = (–9.4)(–1.2)Step 2: = (–9.4)(–1) + (–9.4)(–0.2)Step 3: = (9.4) + (1.88)Step 4: = 11.28Which step shows where she applied the property that states multiplying two negative numbers will always yield a positive number?

Which is equivalent to 3.25%?

According to the information in the table, who is the fastest typist?Words Typed by Four TypistsTypistWords TypedMinutes TypingElla64016Harper45015Owen56014Shaquille54012

A frozen dinner at a grocery store is purchased for $2.20 wholesale and is marked up by 40 percent. A customer wants to buy four frozen dinners. How much will the customer pay, including paying 9 percent sales tax? Round your answer to the nearest cent.

Helene, a hiker, starts at an elevation of 27 feet above sea level and descends 32 feet during her hike to base camp. Which describes the elevation of base camp?

Antwan determines the distance between the points –7 and 2 on a numberline. Maggie determines the difference between the numbers –7 and 2. How are Antwan’s and Maggie’s solutions related?

The figure on the grid is the result of enlarging a rectangle by a scale factor of 1.5.Which graph shows the original rectangle?

Twenty percent of the 640 pitches Kendall threw last year were strikes. Which table can be used to find the number of strikes she threw?

A rectangular magazine cover is photocopied by using a scale factor of . The length of the photocopy of the magazine cover is

Kiesha and her classmates wrote proportions for the reduction of a triangle. Which proportions are set up correctly? Select three options.

Aimee noticed her plant grew of an inch every week since it sprouted. She created this graph to show its growth.Which statement about Aimee’s graph is true?

Raj was friends with his waitress so he left her a 90 percent tip.PercentsTotal90%10%100%10%10%10%10%10%10%10%10%10%10% xIf his tip was $27.54, what is the value of x in the table above?

The new number, 550, is 200 more than the original number. What is the approximate percent change?

What is the solution to ?

Renee used the values in the table to calculate simple interest. Principal$750Interest rate?Time11 yearsInterest$412.50Which interest rate is missing from Renee’s table?