Math is so hard need help on my maths homework

If f(x)= 3x+6 which of the following is the inverse of f(x)

Askateboard ramp is in the shape of a right triangle what is the height of the ramp

He trapezoid is composed of a rectangle and two triangles. what is the area of the rectangle? what is the total area of the triangles? what is the area of the trapezoid? ? a) 42 cm2; 27 cm2; 69 cm 2 b) 54 cm2; 27 cm2; 81 cm 2 c) 108 cm2; 27 cm2; 135 cm 2 d) 108 cm2; 13.5 cm2; 121.5 cm 2