Question

Andrew has a cell phone plan that provides 300 free minutes each month for a flat rate of $19. For any minutes over 300, Andrew is charged $0.39 per minute. Which of the following piecewise functions represents charges based on Andrew's cell phone plan?

Answer 1

hey

Answer 2

what grade are you in

Answer 3

8th

Answer 4

ok what does it mean bypiecewise

Answer 5

this type of equation

Answer 6

Yes, I know about piecewise functions. Do you think that the one you posted is the correct answer? If so, I'll check it. @olamy

Answer 7

either that one or

Answer 8

@Directrix

Answer 9

Okay, let me study them a minute or two.

Answer 10

these are the other two options

Answer 11

thank you @Directrix

Answer 12

They both are attractive options.
I tried the one attached at 400 minutes to see what the output is.

19 + .39 * 400 is not the correct price.

Then, I tried the other one...

Answer 13

hmmm

Answer 14

This one at x = 400 minutes works.

Keep the minutes at 300 or below and the bill is $19.

For 400 minutes, take the second part of the pieces,

19 + .39* (400 -300) given x > 300

The .39 per minute rate is for just the 100 minutes and then add the $19.

So, this is the option I would choose.

What do you think? @olamy

Answer 15

Let me look at the other two posted options. I just saw them.

Answer 16

These two are way off the mark. Do you see why?


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Answer 17

yes i do:)

Answer 18

thank for your help

Answer 19

You are welcome.