3. let h(t) = 16t – 4t -1. evaluate h(3).

The parabola x = y² - 9 opens: a.)up b.)down c.) right d.)left

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

Can someone me out here number 4 plz