Using data from 2014 and projected to 2019, the percent of people in the world who are Internet users can be approximated accurately by

(1) y = 2.14t + 32.2 or by

(2) y = 0.00536t² + 2.07t + 32.4

with t equal to the number of years after 2010.

(a) Which equation is more accurate for 2016, when the percent was 45%?

(b) Use both formulas to estimate the percent of users in 2025.