f(3)=$768 <- Answer
A computer valued at $1500 loses 20% of its value each year. a. Write a function rule that models the value of the computer. b. Find the value of the computer after 3 yr. c. In how many years will the value of the computer be less than $500? Remember the general form of an exponential function: \(f(x)=a*b^x\). Given your table and situation, determine values for a and b. Write the appropriate exponential function.