Leo and maggie volunteer at the local bird sanctuary. volunteers carry walkie-talkies. leo notices that his walkie-talkie’s battery charge is only at 20%. when fully charged, the batteries last 12 hours. leo thinks the walkie-talkie will last for his entire 3-hour shift.

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?