Perform the indicated operation.

(-9 + 21) - (-12 + 4) =

A school bought 32 new desks each desk coast 24$ estimate how much the school spent on the new desks

David has $17,000 to invest. he invests $12,000 in a mutual fund that pays 12% simple interest. if he wants to make at least $2200 in yearly interest at what minimum rate does the remainder of the money need to be invested

If one platter of lasagna uses 1.7 cups of tomato sauce, how many cups of tomato sauce will 7 platters of lasagna require?

You have a pool that measure 15 yards by 10 yards. You want to build a deck around all four sides of the pool and you want to increase the total area to 250 square yards. What is the width of the deck?

The coefficient of 8 times 2n is

The larger of two numbers is six less than twice the smaller number. If the sum of the numbers is 42, find the numbers.

What is the range of the data set? 39, 44, 44, 49, 62, 55, 57, 30, 40

What is the relationship between a reflection and a rigid motion?

Which of the following ratios is not equivalent to 6:10

What does it mean when there is no coefficient of the variable . there is an error in the equation c. the implied coefficient is 1 b. the coefficient is zero d. the coefficient is negative