F(x) = 3x -6 What is 7 times f(x)

Which point-slope form equation represents a line that passes through (3,-2) with a slope of -4/5

How do i simply this radical expression?

Gia opened two savings accounts at two different banks. one account earns an annual 3.4% simple interest, and the other earns half as much. if she deposited $500 in each account, how much total interest will she have earned in 5 years? a. $34.00 b. $25.50 c. $51.00 d. $510.00