HELP It's REALLY easy, but you can't retake this practice assignment, so help

It takes an ant farm 3 days to consume 1/2 of an apple. at that rate, in how many days will the ant farm consume 3 apples

Johnny rode his bike to a friends house 4 blocks down the street in his neighborhood. he immediately rode back home once he realized his friend was unable to play. what was his displacement for the total bike ride trip? what could you use as a reference point ? show the steps to solve this problem.

Factor these polynomials and explain how 1. 12x - 3x^2 2. 20 - 240x^2