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Please help me right away.

Please help me right away.
asked 58.0k views
4 votes
Please help me right away.

Please help me right away.-example-1
asked
User Rory Blyth
by
7.6k points

1 Answer

5 votes


(D(t))/(R(t))=(400-120t)/(450-150t)=(10(40-12t))/(10(45-15t))=(40-12t)/(45-15t)\to\boxed{a.}

answered
User Brayn
by
8.6k points
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