Anyone know the answer? :)

Cam bought some used books for $4.95. he paid $0.50 each for some books and $0.35 each for the others. he bought fewer than 8 books at each price. how many books did cam buy?

Ben bowled 124 and 188 in his first two games. what must he bowl in his third game to have an average of at least 160?

Question 14 (1 point) larry deposits $15 a week into a savings account. his balance in his savings account grows by a constant percent rate.