Question

Please help, please no links or websites

Answer 1

12

Explanation:

Just substitute 3 for n and solve.

Solve the expression
`2+(3-1)5\\`

Use PEMDAS and solve.

(3-1) = 2 so it becomes 2 + (2)5

Then multiply 2 and 5 to get 10.

Then add 2 so you get 12.

`a_(3)`=12