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sertanlavr [38]
3 years ago
10

Cookies are on sale! Today each cookie costs $0.75, less than the normal price. Right now if you buy 7 of them it will only cost

you $2.80!
1) Write an equation to determine the normal price of each cookie (c)

2) Find the normal price of each cookie.
Mathematics
1 answer:
Sophie [7]3 years ago
3 0
Equation : c = (2.80 / 7) + 0.75

Normal price of each cookie:
c = (2.80 / 7) + 0.75
c = 0.4 + 0.75
c = $1.15
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Solve the system of equations for 7x+2y=16 and -21x-6y=24
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Simplifying
7x + 2y = 16

Solving
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Move all terms containing x to the left, all other terms to the right.

Add '-2y' to each side of the equation.
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