PLS HELP EASY QUESTION

PLS HELP!

F(n + 1) = f(n) – 8. if f(1) = 100, what is f(6)?

If w = 6 units, x = 3 units, and y = 5 units, what is the surface area of the figure? 168 units2 240 units2 144 units2 96 units2

If you double the input of a function and it results in half the output, and if you triple the input and it results in a third of the output, what can be guessed about the function? check all that apply.