Which point is an x-intercept of the quadratic function f(x) = (x + 6)(x – 3)?

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup

Can someone me out here number 4 plz

You and a friend went to the movies. you spent half your money on tickets. then you spent 1/4 of the money on popcorn, $2 on candy, and $3 on a soda. if you have $1 left, hiw much money did u take to the movies?