Alexa programmed a website's checkout process with an equation to calculate the amount customers will be charged when they buy hair ribbons. The website offers a discount. If one ribbon is bought at the full price of $5.75 then each additional ribbon is $3.50. State an
equation that represents the cost C, when r ribbons are downloaded,

Marla bought a book for $12.95, a binder for $3.49, and a backpack for $44.99. the sales tax rate is 6%. find the amount of tax and the total she paid for these items

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?

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.