What expression is equivalent to -3(x+10)

Which is the graph of the function y=2(4)^x

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 (x-2) 2= 49, then x could be a. -9 b. -7 c.- 2 d. 5 e.9