Consider the function f(x) = (x − 5)2 + 2. On a coordinate plane, a parabola opens up. It goes through (3, 5), has a vertex at (5, 2), and goes through (7, 5). Which of the following domains allows f(x) to have an inverse that is a function?

Darcy deposited $390 into a savings account. as long as the account balance remains at or above $150, she does not have to pay a service fee for the account. for how many months can she withdraw $40 a month without having to pay service fees? a) 3 b) 5 c) 6 d) 9