Joseph and tyler went to the hobby store. they each bought a race car for $15.99. joseph bought a blue race car for $2.99 and tyler bought a red race car for $3.99. the hobby store charges 8.9% tax. how much did they spend altogether plus tax?

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?