How do you convert a decimal into a percentage?

What is the sum of the geometric series in which a1 = 7, r = 3, and an = 1,701? hint: cap s sub n equals start fraction a sub one left parenthesis one minus r to the power of n end power right parenthesis over one minus r end fraction comma r ≠ 1, where a1 is the first term and r is the common ratio

What is 60.9643790503 to 5 decimal

Find the area between y=e^x and y=e^2x over [0,1]