Derek adds water to a pool at a rate of 12 gallons per minute and the reduces the rate to 8 gallons per minute. derek adds waterto the pool for a total of 2 hours. let t be the time in hours that he adds water to the pool at the fastest rate. write algebraic expression to represent how many minutes he adds water to the pool at each rate

What is (28 + 7 + 6 + 3) x 1/2 show your work

Adj has a total of 1075 dance and rock songs on her system. the dance selection is 4 times the size of the rock selection. write a system of equations to represent the situation.

Which situation can be modeled by the inequality 5 + 10w ≥ 45? a. you start with $5 and save $10 a week until you have at least $45. b.you start with 5 baseball cards and purchase 10 cards every week until you have at most 45 cards. c.you start with 5 water bottles and purchases cases of 10 water bottles each until you have a total of 45 water bottles. d.you spend $5 plus $10 per week until you have less than $45.