From the given the function, <span>y(t)=−t²+14t−40; the graph will be as shown below:
From the graph, it is evident that between the intervals 6</span>≤t≤8<span>:
The value of our function decreases over the given interval. Hence the answer is:
</span><span>a. The value of y(t) increases over the interval 6≤t≤7
</span>
Answer:
see attached.
Step-by-step explanation:
Answer:
878
Step-by-step explanation:
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Find the cost of the first 10 hours:
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10 hours = $220 x 10
10 hours = $2200
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Find the cost of the next 5 hours (only the second mechanic worked):
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5 hours = $2725 - $2200
5 hours = $525
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Hourly charge of the second mechanic:
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5 hours = $525
1 hour = $525 ÷ 5
1 hour = $105
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Hourly charge of the first mechanic:
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$220 - $105 = $115
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Answer: First mechanic = $115/hour ; Second mechanic = $105/hour
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Answer:
4.18
Step-by-step explanation: