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Ksenya-84 [330]
3 years ago
8

Laura has to buy stickers, erasers, and a pencil. She can only spend $5. A sticker costs $0.35, an eraser costs $0.99, and a pen

cil costs $0.59. Can Laura buy 3 stickers and 3 erasers?
[Use the inequality 0.35x + 0.99y + 0.59 ≤ 5]
Yes, because the total will be $3.62

Yes, because the total will be $4.61

No, because the total will be $5.62

No, because the total will be $5.93
Mathematics
2 answers:
Zina [86]3 years ago
8 0
$5-(3x.35)-(3x.99)-.59=.39
yes with .39 left so they spent 4.61
irinina [24]3 years ago
8 0

Answer:

The correct option is B) Yes, because the total will be $4.61

Step-by-step explanation:

Consider the provided inequality.

0.35x + 0.99y + 0.59 ≤ 5

Where x represents the number of sticker and y represents the number of eraser.

Laura want to buy 3 stickers and 3 erasers.

Substitute the value of x = 3 and value of y = 3 in the above inequality and identify whether the inequity holds.

0.35(3) + 0.99(3) + 0.59 ≤ 5

1.05 + 2.97 + 0.59 ≤ 5

4.61 ≤ 5

4.61 is less than 5. Thus, the inequality holds.

Hence, the correct option is B) Yes, because the total will be $4.61

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A student has 10 coins in her pocket that have a value of $0.85. The coins are either
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Answer:

\left\{\begin{matrix}x+y=10\\ 0.05x+0.10y=0.85\end{matrix}\right.

Step-by-step explanation:

<u>System of Equations</u>

Let's call:

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y = number of dimes in the student's pocket

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The system of linear equations that represents this scenario is:

\left\{\begin{matrix}x+y=10\\ 0.05x+0.10y=0.85\end{matrix}\right.

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