OpenStax, Elementary Algebra 2e §8.9 Use Direct and Inverse Variation · Review Exercise 148 · Algebra · Rational expressions
Use Direct and Inverse Variation · Review Exercise 148
Solve.
The distance to stop a car varies directly with the square of its speed. It takes 200 feet to stop a car going 50 mph. How many feet would it take to stop a car going 60 mph?
Its source prints no answer for this problem, so there's nothing to check against.
OpenStax, Elementary Algebra 2e · §8.9 Use Direct and Inverse Variation · Review Exercise 148
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