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xeze [42]
3 years ago
11

Charlotte is working two summer jobs, making $7 per hour babysitting and making $9 per hour walking dogs. In a given week, she c

an work a maximum of 11 total hours and must earn at least $85. If Charlotte worked 8 hours walking dogs, determine the minimum number of whole hours babysitting that she must work to meet her requirements.
Mathematics
2 answers:
user100 [1]3 years ago
5 0

Answer:I got 2 hours of babysitting.

Step-by-step explanation:Since she has already spent 8 of her hours walking dogs, she has made 72 dollars and has 3 hours left to work. 85-72=13, so she needs to make 13$ in her 3 hours of babysitting. 13/9=1.444... so she should meet her requirements in 2 hours, since it asks for whole numbers. I hope this helps!

yaroslaw [1]3 years ago
5 0

Answer: the minimum number of hours is 2

Step-by-step explanation:

Let x represent the number of hours that she must babysit.

In a given week, she can work a maximum of 11 total hours. If Charlotte worked 8 hours walking dogs, it means that

x + 8 ≤ 11

x ≤ 11 - 8

x ≤ 3

She makes $7 per hour babysitting and $9 per hour walking dogs. It means that if Charlotte worked 8 hours walking dogs and x hours babysitting in a week, her total earnings would be

(7 × x) + (8 × 9) = 7x + 72

She must earn at least $85. Therefore,

7x + 72 ≥ 85

7x ≥ 85 - 72

7x ≥ 13

x ≥ 13/7

x ≥ 1.86

Since it must be whole numbers, then

x ≥ 2

Therefore, the range of hours is

2 ≤ x ≤ 3

The minimum number of hours is 2

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weqwewe [10]

Answer:

B.166 11/12

Step-by-step explanation:

To handle this problem better, we can separate the fraction and integer portions to look at the whole situation better.

First, let's only look at the integers. Anthony flew up his drone 125 feet (translating to +125), allowed it to drop 14 feet (translating to -14), and then flew it up for 55 feet (translating to +55). Hence, only considering the integers, the total change in the drone's position would be (125 - 14 + 55) feet, which equates to 166 feet.

You'd probably have already noticed this answer is quite close to B. 166 11/12 feet, but let's keep on going for now.

On the fraction part, he flew his drone up 1/2 feet, allowed it to drop 1/3 feet, and then flew it up for 3/4 feet, translating to (1/2 - 1/3 + 3/4) feet.

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Step-by-step explanation:

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The only time something isn't a function is if two different outputs had the same input. However, it's okay for two different inputs to have the same output.

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Step-by-step explanation:

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