Evaluating functions: evaluate each function at the given value or the expression h(x) = x^2 – 5; Find h(-3z)

A. 9z^2 - 5

B. z^2 - 2z - 4

C. 4z^2 - 5

D. z^4 - 5

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

Rob spent 25%, percent more time on his research project than he had planned. he spent an extra h hours on the project. which of the following expressions could represent the number of hours rob actually spent on the project? two answers

If you flip a coin 3 times, what is the probability of flipping heads 3 times? a. p(3 heads) = 3/8 b. p(3 heads) = 1/6 c. p(3 heads) = 1/8 d. p(3 heads) = 1/2