F(x) = x +4 and g(x) = 12x -6 what is f(3) + g (-1)

(a) 22

(b) 33

(c) -11

(d) 11

i am having a brain fart can someone explain how i get the answer to this?

What is the rotational symmetry of a wheel

Whats the name of the vertical axis

The two cylinders are similar. if the ratio of their surface areas is 9/1.44 find the volume of each cylinder. round your answer to the nearest hundredth. a. small cylinder: 152.00 m3 large cylinder: 950.02 m3 b. small cylinder: 972.14 m3 large cylinder: 12,924.24 m3 c. small cylinder: 851.22 m3 large cylinder: 13,300.25 m3 d. small cylinder: 682.95 m3 large cylinder: 13,539.68 m3