SOLUTION: I have a linear system of equations project to do and we have to do it on a board. We have to graph it, do substitution and do elimination. My problem is the school store sells p

Question 654167: I have a linear system of equations project to do and we have to do it on a board. We have to graph it, do substitution and do elimination. My problem is the school store sells pencils for $0.45 and pens for $0.95. On Friday they sold 10 writing utensils earning a total of $8.50. How many of each item did they sell?
Answer by lynnlo(4176) (Show Source): You can put this solution on YOUR website!
pencils .45 pens .95
2 sold .90 8 sold $7.60
10 items sold 2+8=10 8x.95=$7.60
2x.45=.90
total $8.50

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