Posted by **vinci** on Tuesday, July 16, 2013 at 12:57am.

Find the cost C for a 10-minute phone call if the cost x for the first 3 minutes is $1.80 and the cost y for each additional minute is $0.35. Use C = x + 7y.

- math -
**Sumare**, Tuesday, July 16, 2013 at 1:03am
The Answer I got is $5.49.

3+7×0.35

x+7y

- math -
**vinci**, Tuesday, July 16, 2013 at 1:23am
C = $1.80 + ( 7 x $0.35 )

= $4.25

- Go with vinci's answer math -
**Reiny**, Tuesday, July 16, 2013 at 8:13am
Sumare's answer is not correct

- math -
**Writeacher**, Tuesday, July 16, 2013 at 9:03am
Several of Sumare's answers were incorrect last night/early this morning.

=(

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