Johnny and mona work in a bakery.
johnny sells 14 boxes of almond cookies. each box has the same number of cookies. let a represent the number of almond cookies in a box.
mona sells 28 boxes of chocolate cookies. each box has the same number of cookies. let b represent the number of chocolate cookies in a box.
johnny writes 14a+28b as an expression to show the total number of cookies that he and mona sold.
which of the following expressions is equivalent to johnny's expression?
14(a+b)
14(a+2b)
14a+(2b)
28(a+b)