What is the answer to 3/8,4/20

I'm confused on this could anyone me and show me what i need to do to solve it.

Ke’ajah has a coupon for 1/3 off the regular price, t, of a tent. which expression represents the price of the tent using the coupon? select the two correct expressions. a. 1/3t b. 2/3t c. t - 1/3 d. t - 2/3 e. t - 1/3t f. t - 2/3t

Find the zeros of each function. f(x) = 6x^2 - 7x - 20