Stephanie is registering her son for swim lessons. there is a one-time $45 registration fee plus a $20 fee per lesson. stephanie paid a total of $225. for how many lessons did stephanie register?

Secant be and cf intersect at point d inside a what is the measure of cde

Two cars which are 40 miles apart start moving simultaneously in the same direction with constant speeds. if the speed of the car which is behind is 56 mph and the speed of the other car is 48 mph, how many hours will it take for the car which is behind to catch up the car ahead of it?

Atriangle has verticals at b(-3,0), c(2,-1), d(-1,2). which transformation would produce an image with verticals b”(-2,1), c”(3,2), d”(0,-1)?