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Anna71 [15]
2 years ago
6

Collins has a part-time job as a dog walker. The table below shows the amount of money Collins earned for different numbers of h

ours of work:
Collins' Earnings from Dog Walking
Number of Hours Worked Money Earned (dollars)
5 30
6 36
8
66


Part A: What are the missing numbers in the table? Show your work. (4 points)

Part B: Collins also does part-time yard work. The ratio of the number of hours Collins works to the money he earns in dollars is 1:7. Create a table to show the money earned by Collins for 5, 6, and 8 hours of doing yard work. (3 points)

Part C: How many more dollars does Collins earn doing yard work for 5 hours than working as a dog walker for 5 hours? Show your work. (3 points)
Mathematics
2 answers:
Katyanochek1 [597]2 years ago
7 0

5HRx5=30

6HRx5=36

8HRx5=40

66HRx5=330

HR stands for hours

Oops sorry this only works for part 1 of your problem

MAXImum [283]2 years ago
7 0

Answer:

30

36

40  

330

HR stands for hours

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Answer:

Step-by-step explanation:

you can find where the first derivative is 0 to find the critical points

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4x³-10x =0 , factor 2x

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2x= 0, so x= 0

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make intervals (-∞, -√5/2), (-√5/2, 0) , (0, √5/2) and (√5/2, +∞)

pick a point to test on each interval: -2, -1, 1 and 2 for example, and

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we went from a decrease to an increase on intervals (-∞, -√5/2), (-√5/2, 0) so x= - √5/2 ≈ -1.58 is a minimum

we went from a decrease to an increase on intervals (0, √5/2), (√5/2, +∞) so

x= √5/2 ≈ 1.58 is a minimum as well

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