How many hours does it take for the earth to rotate

Solve - pv + 40 < 65 for v solve 7w - 3r = 15 for r

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

True or false: the graph of y=f(bx) is a horizontal compression of the graph y=f(x) if b< 1