Joshuas cousin pledged 12$ for a charity walk. if joshua walked 3 miles how much did his cousin pay per mile

For f(x)=2x+3 and g(x)=x^2- 8 find (f+g) (x)

What effect would doubling all the dimensions of a triangular pyramid have on the volume of the pyramid? explain your reasoning.

Ian is in training for a national hot dog eating contest on the 4th of july. on his first day of training, he eats 4 hot dogs. each day, he plans to eat 110% of the number of hot dogs he ate the previous day. write an explicit formula that could be used to find the number of hot dogs ian will eat on any particular day.