Help pls asap 1.tell how the commutative and associative properties of addition can help you evaluate the expression.

2.1 + (5.8 - 4.1)

2.evaluate the expression
2.1 + (5.8 - 4.1)

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