Gas mileage depends in part on the speed of the car. gas mileage of a subcompact car is given by m(x) = -0.04x²+3.6x-49, where 20 < x < 70 represents the speed in miles per hour and m(x) is given in miles per gallon. At what speed will the car get the maximum gas mileage?

what is the maximum gas mileage?​

Aschool puts on a play. the play costs $1,200 in expenses. the students charge $4.00 for tickets. there will be one performance of the play in an auditorium that seats 500 people. what is the domain of the function that shows the profit as a function of the number of tickets sold?  

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

What are the coordinates of the midpoint of ab? ,1/2) /2,-1) ,-3/2) /2,-2)