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goldenfox [79]
3 years ago
13

Mr.o'brien is paid $7.30 per hour for the first 40 hours he works in a week.He is paid 1.5 times that rate for each hour after t

hat.
Last week, Mr.o'brien worked 44 hours.He says he earned $321.29 last week. Do you agree? Support your answer.
Mathematics
1 answer:
zalisa [80]3 years ago
7 0
In first 40 hours he earns = 7.30 x 40 = $292
Each hour after his rate = 7.20 x 1.5 = $10.80 per hour
In extra four hours he earns = 10.80 x 4 =  $43.20 

Total earnings = $292 + $43.20 = $335.20 
Therefore you don't agree 
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Read 2 more answers
The radius of a sphere is increasing at a rate of 5 mm/s. How fast is the volume increasing (in mm3/s) when the diameter is 40 m
jeka94

9514 1404 393

Answer:

  8000π mm^3/s ≈ 25,133 mm^3/s

Step-by-step explanation:

The rate of change of volume is found by differentiating the volume formula with respect to time.

  V = 4/3πr^3

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For the given numbers, this is ...

  V' = 4π(20 mm)^2·(5 mm/s) = 8000π mm^3/s ≈ 25,133 mm^3/s

_____

<em>Additional comment</em>

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4 0
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