What is the answer to simplify 10y-7y

The zoo collects $9.60 for every 24 tickets sold. how much will be collected for 400 tickets?

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.

D. in a discrete probability distribution, the sum of the probabilities for the discrete variables will be > 1. true or false