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3 years ago

7

You want to change your cell phone service. The new company charges $40 per month for cell phone use. There is a one-time start-

up fee of $25. Which equation shows the total cost of your cell phone service over time?

2 answers:

Anvisha [2.4K]3 years ago

8 0

I think it might be 40 25 and then u take the 56t% 768#y5u% this might be the easy way toslove it

faltersainse [42]3 years ago

4 0

25+40*t=c
T=time,c=cost over time

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Whitepunk [10]

Answer:

$A=81\pi\ m^{2}$

Step-by-step explanation:

Step 1

Find the radius of the circular cross section

we know that

The circumference is equal to

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we have

$C=18\pi\ m$

substitute and solve for r

$18\pi=2\pi r$

simplify

$18=2 r$

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Step 2

Find the area of the circular cross section

The area of the circle is equal to

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we have

$r=9\ m$

substitute

$A=\pi (9)^{2}$

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