A stack of boards is 21 inches high. Each board is 1 and 3/4 inches thick. How many boards are there?

a store owner bought some scrunchies for $0.10 each. she marked them up to $5 each. what was the percent increase in the price of the scrunchies?

Bob deposits $3000 into an account that pays simple interest at a rate of 5% per year. How much interest will he be paid in the first 5 years?

There are 30 students in a class 20 % of them recived an a, how many recieved an a

Use the elimination method to solve the system of equations. choose the correct ordered pairs - x + y=-3 and 3x + 2y=9

Dvds are on sale for $24 dollars each. which expression can be used to find the cost in dollars of buying 4 dvds?

Tony has 7/8 of a candy bar. He wants to split the bar into serving that are 3/10 of the bar. How many servings can he make?

7am one morning detectives find a murder victim in a closed meat locker. The temperature of the victim measures 88. Assume the meat locker is always kept at 40, and at the time of death the victim's temperature was 98.6.

How many fourths are there in 2 1/4?

The area of pennsylvania is 46,055 square miles. the area of florida is about 1.428 times larger than pennsylvania. what is the area of florida to the nearest square mile?

Find the quotient of ' (16t^2-4) / (8t+4) '