HELP PLEASE I WILL MARK BRAINLIEST AND GIVE A BUNCH OF POINTS IF YOU ANSWER CORRECTLY
An initial population of 810 fish is introduced into a lake. This fish population grows according to a continuous exponential growth model. There are 972 fish in the lake after 7 years.
(a) Let t be the time (in years) since the initial population is introduced, and let y be the number of fish at time t.
Write a formula relating y to t.
y=(?)e^(?)t
Use exact expressions to fill in the missing parts of the formula.
Do not use approximations.

(b) How many fish are there 15 years after the initial population is introduced?
Do not round any intermediate computations, and round your answer to the nearest whole number.