It costs Charlie's Car Repair Shop $27 to change the oil. The shop charges their customers $40 for an oil change. What is the percent of markup in the cost of an oil change?

If B=xy+t express y in terms of B x and t

Y=a (x-r) (x-s) what is a and r and s?

Dorene purchased a chocolate bar in a shape of a triangular prism at the local candy store. If the chocolate bar has a base area of 12 square units and a height of 8 units, how many cubic units of chocolates did dorene bu

Martina needs to memorize words on a vocabulary list for french class. she has memorized 12 of the words, which is three-fourths of the list. how many words are on the lis

Colin got 16 out of 80 correct in his test. What fraction of the marks did he get correct? Give your answer in its simplest form.

What does control for eximerment mean .

A scientist estimated that a mixture would need 5 millimeters of a chemical to balance. The actual amount d was 7 millimeters. What was the percent error of the scientists estimation?

Start at 7 and subtract 3each time

Suppose you know the area of a circle and the measure of the central angle of a sector. Describe the process of finding the area of the sector.

Cups are sold 8 a package and plates are sold 12 to a package. If you want to have the same number of each item for the party, how many of each do you need to buy? what is the least number of packages of each you need to buy?