csterner101

12.07.2021 • 

Mathematics

Mike and perry run a art company. They work together to make and paint custom pieces. Mike charges a $100 flat fee for each art piece he makes, plus $420 for each hour he spends making.
Perry charges a $150 flat fee for each painting he paints, plus $390 for each hour he spends painting.

a) Represent what mike charges for one art piece

b) Represent what Perry charges for one painting

c) Write a new simplified expression that represents their total charges, together, for one art piece.

d) Use your answer from part c) to calculate the total cost of a dresser if mike spends 7 hours on drawing it and Perry spends 4 hours on painting it.

Ответ:

kobiemajak

14.04.2021

Mathematics

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The mean is the average.

Total all the numbers and divide by the quantity:

600 / 15 = 40

Now the outlier is the number 18, so subtract 18 from the total and subtract 1 from the quantity and find the mean:

582 / 14 = 41.57 = 41.6

The mean increase by 1.6

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