Answer:
6
Step-by-step explanation: :)
If x=1
1/3x = 1/3
3x = 3
If x=2
1/3x=2/3
3x=6
If x=3
1/3x=1
3x=9
If x=4
1/3x=1 1/3
3x+12
Problem #3
d). The rate of change is 7. I got my answer by using the slope formula: y2 - y1
----------- = 35 - 21
x2 - x1 -------------- = 14
5 - 3 ----- = 7.
2
This means that for every 2 driveways he shovels, he earns 14 dollars.
2x² - 4x = 14
<u>Divide by 2 through:</u>
x² - 2x = 7
<u>Add in the term (b/2)² :</u>
x² - 2x + (2/2)² = 7 + (2/2)²
<u>Complete the square:</u>
(x - 1)² = 7 + 1
<u>Combine like terms:</u>
(x - 1)² = 8
Answer: (x - 1)² = 8
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The question did not ask to solve x. But here is the solution if needed to solve x:
(x - 1)² = 8
x - 1 = ±√8
x = 1 ±√+8
x =1 + 2√2 or x = 1 - 2√2
Answer: x =1 + 2√2 or x = 1 - 2√2
