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aleksandr82 [10.1K]
3 years ago
14

A phone company charges $0.45 for the first minute and $0.35 for each additional minute for a long distance call. Which numerica

l expression can be used to find the cost of a 20-minute phone call?
Mathematics
2 answers:
Vinvika [58]3 years ago
8 0

0.45+19(0.35)

Total cost $7.10 (0.45+6.65)

AnnZ [28]3 years ago
8 0

Answer:

Total cost for 20 minutes = $0.45  + $0.35 * 19.

Step-by-step explanation:

Given  : A phone company charges $0.45 for the first minute and $0.35 for each additional minute for a long distance call.

To find : Which numerical expression can be used to find the cost of a 20-minute phone call.

Solution : We have given

Company charge for 1 minute = $0.45 .

For other minutes = $0.35 .

Total minutes he called = 20 minutes

Cost of 1 minute call = $0.45 .

Cost of 19 minutes call = $0.35 * 19.

Total Cost for 20 minute = Cost of 1 minute + Cost pf 19 minutes.

Total cost for 20 minutes = $0.45  + $0.35 * 19.

Therefore, Total cost for 20 minutes = $0.45  + $0.35 * 19.

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percentage decreased = \frac{4}{40}\times 100 = 10\%

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