What is the value of the expression
3+(2+8)^2+4*(1/2)^4

First here's the expression written out a little clearer

Parentheses: (2+8) = (10).

Exponents: 10^2 is 100, and is

Multiplication and division: 4 * 1/16 is or simplified

Addition and subtraction: Go left to right. 3 + 100 + = 103.25 (final answer)

a_n = a_1 + (n - 1)d

the first term is 6.

the common difference d = ?

when you find d, replace n with 7 and d with the common difference to find your answer.