PLEASE HELP Which equation is equivalent to 6n - 27?

9(n-3)

3(2n-9)

3(n-9)

6(n-4)

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

Xy x xy if a and b are positive integers such that a*b=9 and b*a=72 what is the value of a/b

Arectangle plot measure 20ft. by 30ft. a 3-ft.-wide sidewalk surrounds it.find the area of the sidewalk.