Question

holly goes to the store to buy peanut butter and jelly for a school picnic.peanut butter costs$4 a jar,and jelly costs $2 a jar.if holly spends a total of $28 and buys a total of 8 jars,how many jars of peanut butter did she buy?
a)12
b)8
c)7
d)6
e)2 ??? btw i looove peanut butter????

Answer 1

4x+2y=28
x+y=8

Answer 2

me too love peanut butter
2 <------

Answer 3

4b+2j=28
b+j=8(*-2) ---> 2b-2j=-16 add both eq 6b=12
b=2--->j=8-2=6

Answer 4

2<-----peanut butter
6<--jelly