It costs 5.50 per hour to rent a pair of ice skates for up to two hours. after 2 hours, the rental cost per hour decreases to 2.50. how much does it cost to rent a pair of skates for 3 hours

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

Last year, a state university received 3,560 applications from boys. of those applications, 35 percent were from boys who lived in other states. part a)how many applications did the university receive from boys who lived in other states? part b)applications to the university from boys represented 40percent of all applications. how many applications did the university receive in all? i don't how to do part b so me and plz tell how you got your answer

Abacteria population is tripling every hour. by what factor does the population change in 1/2 hour? select all that apply