B) mr. wonderful has called on these students in class:
boy, boy, girl, boy, girl, boy, girl, girl, boy, boy
based on this data, what is the probability that the next student called on

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%?