10-3 More Uses of Substitution

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10-3 More Uses of Substitution
1. Without graphing find the point where
the graphs for y 6x - 1 and 7x - 2y -3
intersect.
Answer
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2. To raise money students sold t-shirts selling
for 8 ea. CDs for 12 ea. They sold a total
of 35 items and raised 360. Find how many of
each items they sold.
They sold CDs and t-shirts.
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3. Joan wishes to stock up on coffee beans. She
pays 5 per lbs for decaf and 6.50 per lbs for
regular. She ends up buying 5 lbs of coffee
beans for 29.50. How much of each type of
coffee did she buy?
She bought lbs. regular and lbs. of decaf.