60 POINTS, BOTH PARTS

Part A

BUSINESS: Ahmed's consulting firm began with 23 clients. The number of clients decrease at an annual rate of 0.5%.

Write a function that represents the number of clients at Ahmed's consulting firm y after x years.

A) y = 24(0.995)^x
B) y = 24(1.995)^x
C) y = 23(1.995)^x
D) y = 23(0.995)^x

Part B

After how many years will Ahmed's consulting firm have 15 clients? Round to the nearest year if necessary.