hayley spent 2 1/2 of an hour playing on her phone. that used up 4/8 of her battery. how long would she have to play on her phone to use the entire battery?

In stepmber, daniel and justin opened a business. during their first three months of business, their average monthly profit was $51. if during their first month, they lost $29, and during their second month, they gained $115, what was their profit or loss for their third plzzz i will give you 299 points