3. A sign says that the price marked on all music equipment is % off the original price. You buy an electric guitar for the sale price of $.
a. What is the original price?

b. How much money did you save off the original price of the guitar?

c. What percent of the original price is the sale price?

Which of the following expressions are equivalent ?

A. 127 cm^2 b. 144.5 cm^2 c. 172 cm^2 d. 50 cm^2

Suppose you just purchased a digital music player and have put 8 tracks on it. after listening to them you decide that you like 4 of the songs. with the random feature on your player, each of the 8 songs is played once in random order. find the probability that among the first two songs played (a) you like both of them. would this be unusual? (b) you like neither of them. (c) you like exactly one of them. (d) redo () if a song can be replayed before all 8 songs are played.