Which expression is equivalent to to the equivalent -1/2(-3/2x+6x+1)-3x

Which graph corresponds to the function f(x) = x2 + 4x – 1?

When 142 is added to a number the result is 64 more times the number my options are 35 37 39 41

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?