Mike went to a football game with his family. They bought 5 boxes of popcorn, 3 programs and spent $41. Sean's family went to the same game, bought 3 boxes of popcorn, 2 programs and spent $26. How much does each program cost at the game?
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OpenStudy (anonymous):
who was playing?
OpenStudy (anonymous):
lol
OpenStudy (anonymous):
ok
\[5x+3y=41\]
\[3x+2y=26\]
OpenStudy (anonymous):
let the cost be x and y for popcorn and program
5x + 3y=41
2x + 2y = 26
Now solve them
OpenStudy (anonymous):
but 3 dosnt gointo 26
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OpenStudy (anonymous):
\[10x+6y=82\]
\[-9x-6y=-78\]
add to get
\[x=4\]
OpenStudy (anonymous):
ah sorry 3x+2y = 26
OpenStudy (anonymous):
y=7
OpenStudy (anonymous):
ok i used your formula i agree
OpenStudy (anonymous):
and since
\[x=4\] we know
\[5\times 4+3y=41\]
\[20+3y=41\]
\[3y=21\]
\[y=7\]
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OpenStudy (anonymous):
popcorn is $3, programs are $7 and it must be a high school game because otherwise these prices would be doubled at least
OpenStudy (anonymous):
ok thank you
OpenStudy (anonymous):
If you were to use the substitution method to solve the following system, choose the new equation after the expression equivalent to x from the first equation is substituted into the second equation.
x + y = 2
3x + 2y = 9