Can somebody help me with this. Do you add the 15 to the 2y or subtract it.

What is the solution of log2  (3x  -  7)  =  3? 4 5

What is the x-intercept and y-intercept of the equation 2x+1. 2o

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.