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3 years ago

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the price of the cell phone is expected to increase by 165% in September 2015. The current price of a cell phone is $62.80. What

is the predicted cost of a cell phone in September 2015? Please explain it!

1 answer:

Sladkaya [172]3 years ago

4 0

Answer:

$166.42.

Step-by-step explanation:

We have been given that the price of the cell phone is expected to increase by 165% in September 2015. The current price of a cell phone is $62.80.

The price of cell phone in September 2015 will be $62.80 plus 165% of $62.80.

$\text{The predicted cost of a cell phone in September 2015}=\$62.80+(\frac{165}{100}*\$62.80)$

$\text{The predicted cost of a cell phone in September 2015}=\$62.80+(1.65*\$62.80)$

$\text{The predicted cost of a cell phone in September 2015}=\$62.80+\$103.62$

$\text{The predicted cost of a cell phone in September 2015}=\$166.42$

Therefore, the predicted cost of a cell phone in September 2015 will be $166.42.

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Step-by-step explanation:

Considering the expression

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Solving the expression

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$\mathrm{Apply\:fraction\:cross\:multiply:\:if\:}\frac{a}{b}=\frac{c}{d}\mathrm{\:then\:}a\cdot \:d=b\cdot \:c$

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$\mathrm{Switch\:sides}$

$6b^3-4b^2-10=5b^3-10$

$6b^3-4b^2-10+10=5b^3-10+10$

$6b^3-4b^2=5b^3$

$\mathrm{Subtract\:}5b^3\mathrm{\:from\:both\:sides}$

$6b^3-4b^2-5b^3=5b^3-5b^3$

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