Please help me

I will give brainliest :)

What is the y-intercept of the line given by the equation

Peter applied to an accounting firm and a consulting firm. he knows that 30% of similarly qualified applicants receive job offers from the accounting firm, while only 20% of similarly qualified applicants receive job offers from the consulting firm. assume that receiving an offer from one firm is independent of receiving an offer from the other. what is the probability that both firms offer peter a job?

At your job you're paid $50 per week plus $3 per sale at least how many saled do you need to make in order to have over $250