Write and solve a word problem involving money that can be solved with a multiplication equation
2 answers:
<em>If wrapping paper costs $0.03 a yard and Anne bought 46.1 yards, how much did Anne spend on wrapping paper. Round your answer to the nearest cent.</em>
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We know that wrapping paper costs $0.03 a yard and that Anne bought 46.1 yards. We want to find out how much Anne spent on wrapping paper so we need to multiply the number of yards, 46.1 by the price per yard which is $0.03.
Now, we begin multiplying as if we were multiplying 461 x 3 to get 1,383. Next, since our original numbers have 3 digits to the right of the decimal point, our answer will have 3 digits to the right of the decimal point. So we have 1.383.
Finally, rounding our answer to the nearest cent, we have $1.38. So Anne spent approximately $1.38 on wrapping paper.
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ANSWER
(-2,-1)
(3,14)
EXPLANATION
The given system is
or
Equate both of them:
This implies that,
x=-2 or x=3
When x=-2, y=y=3(-2)+5=-1
(-2,-1) is a solution.
When x=3 , y=3(3)+5=14
(3,14) is also a solution.