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navik [9.2K]
2 years ago
5

Khianna went shopping for her outfit for a dance at the school. She planned to buy shoes, jewelry, nail polish, makeup, and a dr

ess at the mall. At one store she bought nail polish for $4.79 and makeup for $21.45. At another store she bought shoes for $26.43. At a third store she bought her dress for $168.27. She calculated that she spent $389.21. Is this reasonable? Why or why not?
Mathematics
1 answer:
crimeas [40]2 years ago
4 0
Yes, by the time you add up all estimations, you must add taxes.
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Answer:

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Step-by-step explanation:

I always change the decimals into whole numbers by multiplying them by 10.  If you do this, it is much easier to solve.  All you do is multiply every term by 10.

the equation changes to

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3 years ago
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Pls help it is too hard​
ozzi
U have to substitute in the values of x to get the values of y

answers in order from left to right:
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