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Answer :
Answer:
1) D
2) C
Step-by-step explanation:
1. The blue algae has an initial mass of 20 kg and doubles its mass every hour. Then after t hours, the mass of blue algae is
[tex]M_1=20\cdot 2^t\ kg[/tex]
2. The green algae has an initial mass of 160 kg and grows at a constant rate of 0.20 kg per minute. Then after t hours (60t minutes), the mass of green algae is
[tex]M_2=160+0.20\cdot 60t\ kg.[/tex]
Part I) At t=3:
[tex]M_1=20\cdot 2^3=160\ kg,\\ \\M_2=160+0.2\cdot 60\cdot 3=160+36=196\ kg.[/tex]
The mass of green algae has 196-160=36 kg more mass at 3 hours.
Part II) At t=4:
[tex]M_1=20\cdot 2^4=320\ kg,\\ \\M_2=160+0.2\cdot 60\cdot 4=160+48=208\ kg.[/tex]
The blue algae has 320-208=112 kg more mass at 4 hours.
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Rewritten by : Barada
Answer:
1) D and 2) C
Step-by-step explanation:
took the test, hope this helps! :>
