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vladimir1956 [14]
3 years ago
12

Mary's sink was clogged, so she called a plumber. The plumber charges a service fee of $50 as well as $25 for each hour he worke

d. If mary paid $135.50, write an EQUATION to find the number of hours, h, that the plumber worked.
Mathematics
1 answer:
Katen [24]3 years ago
6 0

Answer: The plumber worked 3.42 hours

Step-by-step explanation:

25h+50=135.50 (minus 50 to both sides)

25h=85.50 (divide 25 to both sides)

h=3.42

Check:

25(3.42)+50=135.50

85.50+50=135.50

135.50=135.50

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Answer:

6, 10, 8

Step-by-step explanation:

aₙ= aₙ₋₁ - (aₙ₋₂ - 4)= aₙ₋₁ - aₙ₋₂ + 4

a₅= -2

a₆= 0

-----------

aₙ₋₂= aₙ₋₁ - aₙ + 4

  • a₄= a₅- a₆ + 4 = -2 - 0 + 4 = 2
  • a₃= a₄ - a₅ + 4 = 2 - (-2) + 4 = 8
  • a₂= a₃ - a₄ + 4 = 8 - 2 + 4 = 10
  • a₁= a₂ - a₃ + 4 = 10 - 8 + 4 = 6

The first 3 terms: 6, 10 and 8

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Step-by-step explanation:

Step 1:

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Step 2:

4x - 6 + - x - 2

Step 3:

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Answer:

3x - 8

Hope This Helps :)

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a CD usally sells for 14.00 if the CD is 30% off and sales tax7% whats the total price of the price of the CD including tax
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