An investment group compares returns on an account

against the function represented in the table, where x is the

time in years and f (x) is the total return on investment.

Which describes the function over the interval given in the

table?

х

a decreasing quadratic function

an increasing quadratic function

a decreasing exponential function

an increasing exponential function

0

5

f (x)

10,000

12,201.90

14,888.64

22,167.15

10

20