The selling price of x number of a certain stereo can be modeled by the function R (x) = 160x. The total cost of making x stereos is C (x) = 71x - 0.02x2. What is the percent markup for 31 stereos?

23%

127%

227%

278%

What is 1054.2 divided by 1.5

3 1/2 divided by 2 1/4 in simplest form?

Mr. Addison is building a sandbox shaped like a rectangular prism. The sandbox is 8 feet long, 6 feet wide, and 1.5 feet deep. How many cubic feet of sand will the sandbox hold?

If the ratio of blue shirts to green shirts is to 5 to 12 with a total of 340 shirts, how many of the shirts are blue?

A pair of socks costs $5.00. A package of 3 pairs costs $12.00. How much would you save if you buy 2 packages instead of 6 individual pairs?

How do you Find percent markup

Write an algebraic expression that represents the quotient of a number and 20

Approximate the value of 12-2pie

Jeff is buying apples and bananas from the farmer's market. He know that to find his total cost he will use the expression 1.25a + 0.50b, where a stands for the number of apples he bought and b stands for the number of bananas he bought.

A theater charges $5 for student tickets and $7 for adults tickets. They sold 75 tickets for a total of $425. Which set of equations can be used to determine x, the number of students tickets sold, and y, the number of adult tickets sold?