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gwendallinesikes
09.12.2020 •
Mathematics
15t +95 + 5 - 9
i need help please
Solved
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Ответ:
Hello!
We need to get a number that is greater than or equal too 120. First of all, let's calculate the sales tax.
120(0.07)=8.4
120+8.4=128.4
This gives us the inequality below.
7.5w+44≥128.4
Now we solve like an equation.
7.5w≥84.4
84.4/7.5≈11.25
w≥11.25
As you can see, the only number greater than 11.25 is D) 12 weeks which is our answer.
I hope this helps!