Problem 144 of 7
Diagnose the average-rate error in If it takes 3 hours to travel 150 miles, the average rate is 3/150 = 1/50 miles per hour.
Using a hint is okay. It just tells the trainer to give you a little more review.
Hidden until you reveal it.
detect reversed subtraction, wrong endpoints, or missing units.
Hidden until you reveal it.
Error must involve reversed subtraction, wrong endpoints, sign, reciprocal, or units.
Enter your answer
Your answer is equivalent to the expected form.
Walkthrough
Full solution stays hidden until you ask for it.
1. Check endpoint choice first.
2. Compute change in output over change in input in consistent order.
3. Attach units if context provides them.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Only giving corrected answer without explaining the error.