The number of exercises on Khan academy has increased rapidly since it began in 200620062006. The relationship between the elapsed time, ttt, in years, since Khan academy began, and the total number of its exercises, E_{\text{year}}(t)E year (t)E, start subscript, start text, y, e, a, r, end text, end subscript, left parenthesis, t, right parenthesis, is modeled by the following function: Eyear(t)=100⋅(1.7)t