In 1945, gasoline cost an average of $0.15/gal. by 2015, the average cost of gasoline had increased 1500%. what was the average cost of gas in 2015? round to the nearest cent.

The equation represents the function f, and the graph represents the function g. f(x)=3(5/2)^x determine the relationship between the growth factors of f and g. a. the growth factor of g is twice the growth factor of f. b. the growth factor of f is twice the growth factor of g. c. the growth factor of f is 2.5 times the growth factor of g. d. the growth factor of f is the same as the growth factor of g.