Suppose the sample space for a continuous random variable is 0 to 100. If the area under the density curve for the variable from 0 to 80 is 0.85, what is
the area under the density curve from 80 to 100?

O A. 0.85
O B. 0.15
O C. 0.80
O D. 0.20

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