Question

. The function y =41 ? 0.95
x
models the difference (in minutes)
between men’s and women’s finishing times for the Boston
Marathon. The number of years since women first officially ran the
race in 1972 is represented by x.
a. Does the exponential function represent growth or decay?
b. Estimate the difference between finishing times in 1990.
c. Predict the difference between finishing times in 2005.