the correct question in the attached figure
Let
x-------------> the number of granola bars
y-------------> the pounds of fruit
we know that
if 12 bars------------> cost $12
1 bars--------------> X
X=12/12---> x=$1
1 bar---------> cost $1
if 9 pounds of fruit----------> cost $36
1 pound-------------------> X
X=36/9--------> x=$4
1 pound -------> cost $4
expression for the total cost=(1)*x+(4)*y----------> x+4y
x=12
y=9
then
the total cost=12+4*9----- $48
an inequality that compares
the total cost with the amount you have to spend is
x+4y<=48
using a graph tool see the attached figure
the inequality that models the number of granola bars you need to buy is
x<=12 the solution for the number of granola bars is the interval [0,12]