According to Dr. Gamble our enrollment grows linearly over time. He told us that initial enrollment was 1400, and this number had grown to 1860 after 4 years. (a) Write down an equation giving the enrollment, y in terms of the number of years since the school opened, x .
y =
(b) How long will it take for the enrollment to reach 2858 students? Round your answer to two decimal places.