I'm so confused on this question, I need help

1. how do you find p(a and b) if a and b are dependent events for two or more actions, such as selecting two candies and drawing p(green, and then pink)?

As a salesperson you get $18/day and $2.80. for each sale you make ifyou want to make at least $79 in one day, how many sales would you need to make? a 21b 22c 23d 24

1. a music store marks up the instruments it sells by 30%. a. if the store bought a guitar for $45, what will be its store price? b. if the price tag on a trumpet says $104, how much did the store pay for it? c. if the store paid $75 for a clarinet and sold it for $100, did the store mark up the price by 30%?