# Math

A phone company offers two monthly plans. Plan A costs \$18 plus an additional \$0.10 for each minute of calls. Plan B costs \$22 plus an additional \$0.08 for each minute of calls.

For what amount of calling do the two plans cost the same?

What is the cost when the two plans cost the same?

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2. 👎
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1. A
y = .10 x + 18

B
y = .08 x + 22

so
the same y when
.08 x + 22 = .10 x + 18
.02 x = 4
x = 4/.02 = 200 minutes
now go back and use either original equation to get y, the cost

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2. 👎
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Damon

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