Can u me on how to figure out the answer for 12+3/8c=8

What is the solution to the equation in the & show work i’m very

1. a parachutist is 800 feet above the ground when she opens her parachute. she then falls at a constant rate of 5 feet per second. select the equation that represents this situation. h = -800t + 5 y = -5x + 800 h = 5t - 800 y = 800x + 5 i need

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