Question

Your sports team is selling patriotic pins and ribbons for a

Answer 1

you dont know how many pins and ribbons there are,

so set the numbers of pins as"x" and the number of ribbons as"y",

pins cost $4each (so total pins cost:4x)

ribbons cost $2 each(so total ribbons cost:2y)

together they add up to $60,

so put the numbers into the equation:

total pins cost+total ribbons cost=total cost

4x+2y=60

懂了吗?