Three years ago Laura bought a new car for $27,400. When she traded the car in to a dealer last week it was worth $15,618. Find
the percent decrease in the car's value over the three year period. Round your answer to the nearest hundredth, if necessary.
1 answer:
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Step-by-step explanation:
The slope of tangent line at a max or a minimum is 0,.
So using point slope formula.
Is the equation of a tangent line. This means we have a horizontal line at y= 4. Horizontal lines have a slope of 0.