Use the following to answer questions 7-9: David's Donut shop charges a flat fee of $2.59 plus $0.38 per mile to deliver donuts to
your party.
7. Which linear equation below can David use to charge his customers for the donuts?
a. y = 2.59x + .38
b. y - .38x – 2.59
d. y = .38x + 2.59
c. y = 38 + 2.59

Julius went on a volunteer trip to centralamerica and took medical supplies with him.he packed a bag with 50 pounds of supplies.he brought pieces of equipment that weighed10 pounds each and bottles of medicine thatweighed pound each prepresents thenumber of pieces of equipment he broughtand b represents the number of bottles ofmedicine he brought then the total weight canbe represented by the equation 10p+b 50.the brought 3 pieces of equipment, how manybottles of medicine did he bring?