Consider the function. f(x) e-3 (ex-5)(e-7)(ex+1) When x 0 f(x) When x 0 f(x)- Your answers should be integers or improper fractions in simplest form. If appropriate, you can also enter "+infinity" or "infinity" as answ fox) has an x-intercept at x= foo) has vertical asymptotes at If there are multiple values, input your answers with commas between them and no spaces, eg. "In(12)In(7)