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Problems Equations
"Sylvia and Doyle work together in a hair salon. Together one week, they did 117 haircuts. Sylvia did 21 more than twice as many haircuts as Doyle. How many haircuts did each do?"
Solve by substitution

Solve by substitution
Solve by substitution
Solve using substitution
Solve for x an y
Solve for x and y
A college graduate made $28,000 in her first year working. She invested half the money in two CDs that earned 3% and 5% annual interest. After one year she earned $625 in interest. How much was invested in the 3% account?
If this equation x + y = 7 and y = 5, what is (x,y)?
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