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Vladimir79 [104]
3 years ago
12

Mary month earnings can be given as R(x)=13x+155 where x equals the number of hours worked josies monthly are given as Q(x)=9x+3

35 how many hours should Josie and Mary work to earn the same salary
Mathematics
1 answer:
tatuchka [14]3 years ago
6 0

Answer:

45hours

Step-by-step explanation:

Given

Mary month earnings to be R(x)=13x+155

Josies monthly earning is given as Q(x)=9x+335

If Josie and Mary work to earn the same salary, then R(x) = Q(x)

13x+155 = 9x+335

subtract 155 from both sides

13x+155-155 = 9x+335-155

13x = 9x+180

subtract 9x from both sides

13x-9x = 9x+180-9x

4x = 180

x = 180/4

x = 45

Since  x equals the number of hours worked by Josie and Mary, this means that Josie and Mary must work for 45hours to earn the same salary

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Answer:

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Step-by-step explanation:

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To solve for x, we convert this log form to exponential form

If log x= a , then x= 10^a

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