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Never due to if they have different slopes they can only have 1 solution.
Answer:
Rate of Change = -77.9 feet/year
My interpretation: "Is Bad."
Step-by-step explanation:
The rate of change is the number of feet that Lake Powell dropped, divided by the number of years the drop took place. We want a value with a unit of feet/year.
<u>Year</u> <u>Feet</u>
1999 3893
2005 3425.6
<u>Change</u>
Year = (2005 - 1999) or 6 years
Feet = (3425.6 - 3893) or -467.4 feet
Rate of Change = (-467.4 feet)/(6 years)
Rate of Change = -77.9 feet/year
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FYI: Lake Powell is 22.39 feet lower today (June 23, 2022) than it was 1 year ago.
No not always sometimes you have to reduce it.
Expand
add 5x to both sides
simplify 2x + 8 + 5x to 7x + 8
subtract 8 from both sides
simplify 1 - 8 to -7
divide both sides by 7
Answer: x = -1.