Curtis is buying supplies for school. He buys p packages of crayons at $1.49 per package and q packages of markers at $3.78 per package. Write an expression to model the situation. What is the meaning of the entire expression

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