Drag a reason to each box to complete this proof. if 12=13x+5 , then x = 21. multiplication property of equality, distributive property, substitution property of equality, substraction property of equality, symetry property of equality

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