How do I solve this problem, I know the correct answer is "e" don't understand how they got it.

Solve the equation for x.3(6x - 1) = 12 i've tried doing the math and i can't find out what i'm doing wrong

Rewrite the following quadratic functions in intercept or factored form. show your work. f(x) = 3x^2 - 12

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?