Linda's income, in thousands of dollars, is given by the function f(x) = 40x + 10, where x is the number of years. her expenses, in thousands of dollars, each year is given by the function g(x) = 25x + 5. which function best describes the amount she is able to put into savings, h, each year, in thousands of dollars? h(x) = 65x + 15 h(x) = (40x + 10)(25x + 5) h(x) = -15x - 5 h(x) = 15x + 5