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gabrielpoyer37
29.01.2022 •
Mathematics
Solve the problem and pick the best answer from the choices.
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Ответ:
Step-by-step explanation:
the third answer is correct.
with a $20 card we can pay for calling costs up to $20 (including $20).
the calling costs are $0.03 per minute in the US, and $0.06 per minute to Brazil.
so, we need to multiply every calling minute in the US by 0.03, and every calling minute to Brazil by 0.06. both results need to be added up.
and the total sum cannot be more than $20.
so
0.03x + 0.06y <= 20
is correct.
Ответ:
hope it helps
Step-by-step explanation:
pls brainliest thank you