Riley has (8p+7) one-dollar coins and (2p"+5) one-dollar bills. Pam has 7p dollars fewer than Riley. a) How much money does Pam have? Give your answer in terms of p
b) if p=6, how much money will Pam have after she gives half of her money to Riley

please solve both, I will give brainiest to whoever solves them both and gets them correct

9.4.34  question   to estimate the height of a stone  figure, an observer holds a small square up to her eyes and walks backward from the figure. she stops when the bottom of the figure aligns with the bottom edge of the  square, and when the top of the figure aligns with the top edge of the square. her eye level is 1.811.81 m from the ground. she is 3.703.70 m from the figure. what is the height of the figure to the nearest hundredth of a  meter?