the
complete question in the attached figure
Let
x----------------- > number of DVD movies--------------- > each movie cost $19
y----------------- > total money to spend
we know
cost popcorn------- > $39
then
y=39+19x
y<=100
(39+19x) <= 100------------- > this is the equation required
x>=0
using a graph tool
see the attached figure
the solution is the interval [0,3.21]
the amount of DVD movies must be a whole number
therefore the solution is 3.21------> 3
the answer is 3
