There are 21 groups of 3 in a room. How many people are there. I need an equation

Babysitting for 8 hrs and making $72.00 or babysitting for 6 hrs and making $57.00. Which is the better deal?

What percent of 7 is 2?

Requirements for proofs in a logical system

On a number line, the coordinates of X, Y, Z, and W are negative 8 , negative 6 , 1 , and 5 , respectively. Find the lengths of the two segments below. Then tell whether they are congruent. XY and ZW

3 bags of wheat, 2 bags of corn and 1 bag of oats weigh the same as a 1 bag of wheat, one bag of corn and five bags of oats.

Jessica purchased a DVD that was on sale for 12% off. The sales tax in her county is 3%. Let y represent the original price of the DVD. Write an expression that can be used to determine the final cost of the DVD.

Dan and his family are traveling to North Carolina. On Monday, they drove 3/8 of the trip and on Tuesday they drove 4/8 of the trip. How much of the trip did they drive so far?

Is - 2 (x+11) = -2x-22 a distributive property

How do you turn equations into vertex form?

What is the value of an annuity due at the end of 15 years of quarterly deposits of $2,000.00 with terms of 8 percent compounded quarterly? $228,102.00 $228,120.00 $232,666.08 $232,665.14