If i fail this class i have to do it again and this is my last chance to bring up my (questions are in the photo(s) provided) you so much in advance!

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

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)

Arectangular garden is 5 feet long and 3 feet wide. a second rectangular garden has dimensions that are double the dimensions of the first garden. what is the percent of change in perimeter from the first garden to the second garden?