Use the second derivative test to classify the critical points of: x^3+6x^2-63x+4

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

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers

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.