Which of the following equations has exactly one real solution? A.
2x + 13 = 2x + 13
B.
5x + 13 = −2x − 18
C.
2(x + 13) = 2x + 26
D.
5x + 13 = 5x − 18

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