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Valentin [98]
2 years ago
7

I need help with this is 8th grade math

Mathematics
2 answers:
geniusboy [140]2 years ago
8 0
The answer: 5 hours
Tresset [83]2 years ago
5 0

Answer:

5 hours

Step-by-step explanation:

Mark recieves 3mg per hour. This can be rewritten as y=3x. Cassie recieves 2x+5. To solve, use substitiution. 3x=2x+5. To solve, subtract "2x" from "3x." You then get x=5.

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