Deon had k dollars to begin with. He just spent 21 dollars. Using k, write an expression for the number of dollars he has left.

Kelly has started an exercise program. Her first goal is to exercise for a total of 20 hours a month. If Kelly works out for 1 1/6 hours each time she works out, how many workouts during the month would Kelly need to reach her goal?

Use Heron's Formula, that is, the area of a triangle is, where the triangle contains sides a, b and c and to find the area of the triangle with side lengths:. a=7/2 b=4/3 c=9/4

Solve each system by substitution. 1) y = 7x - 10 y=-3

To get a b in math, alexandria pappas must average 80 on five tests. scores on the first four tests were 8484 , 7575 , 8181 , and 7676. what is the lowest score that she can get on the last test and still get a b?

Fixed expenses are expenses that do not change from month to month, and variable expenses are expenses that can fluctuate from month to month

What is 2,750 plus 2,750?

The average of a b c and d is p. If the average of a and c is q, what is the average of b and d in terms of p and q?

A cone can be used To make

7. What is 42% of 76?

What is 8+4 (-6x+4) = -6-5x