Using the rational root theorem, what are all the rational roots of the polynomial f(x) = 20x^4+x^3+8x^2+x-12?
a) -4/5 and 3/4
b) -4/5 and -3/4
c) -1, -4/5, 3/4 and 1
d) -1, -4/5, -3/4 and 1

Consider the function f(x)=−2/3x+5 . what is f(1/2) ? enter your answer, as a simplified fraction, in the box. f(1/2)=

Boris needs to buy plastic spoons. brand a has a box 42 spoons for $2.37. brand b has a box of 72 spoons for $3.57. find the unit price for each brand. then state which brand is the better buy based on the unit price. round your answer to the nearest cent.

An alternative to car buying is to make monthly payments for a period of time, and then return the vehicle to the dealer, or purchase it. this is called