A phone company offers two packages of service. Package A is $35.00 per month with an additional charge of $0.15 per minute for long distance. Package B is $50.00 per month with an additional charge of $0.10 per minute for long distance. How many minutes have to be used for the costs of both plans to be the same?

at 300 minutes, the cost of both plans are equal

Step-by-step explanation:

Package A:  f(c) = 35 + .15c

Package B:  f(c) = 50 + .10c

to answer the question we can set both expressions equal to each other and solve for 'c'

35 + .15c = 50 + .10c

35 + .05c = 50

.05c = 15

c = 15/.05

c = 300

is only a line? i think so

find the magnitude of the trig term  

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find the lower bound of the range.

tap for more

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find the upper bound of the range.

tap for more

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step-by-step explanation: