What is the y- intercept of the line with the eqaution y=-2x+4

Find the zero function by factoring (try to show work) h(x)=-x^2-6x-9

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

James is playing his favorite game at the arcade. after playing the game 3 times, he has 8 tokens remaining. he initially had 20 tokens, and the game costs the same number of tokens each time. the number t of tokens james has is a function of g, the number of games he plays. write the function’s formula? t=