A cellphone company charges a monthly rate of $12.95 and $0.25 a mjnute per call.The bill for a minutes is $21.20

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Asked: April 17, 20212021-04-17T14:36:29+00:00 2021-04-17T14:36:29+00:00In: Algebra, High School/Senior Secondary School

Algebra

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acedstud · Answer 1 · 2021-04-17T17:02:51+00:00

acedstud

Let the number of minutes of call the customer made be $a$ , then $12.95+0.25a=21.20$ .

Subtracting 12.95 from both sides gives $0.25a=21.20-12.95=8.25$ .

Dividing both sides by 0.25 gives $\dfrac{0.25a}{0.25}=\dfrac{8.25}{0.25}\Rightarrow a=33$ .

Therefore, the number of minutes of call made by the customer is 33 minutes.

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