Which of the following best represents the average rate at which infants grow in height during the first four years after birth?

3 inches per month

3 inches per year

3 feet per month

3 feet per year

Question

Which of the following best represents the average rate at which infants grow in height during the first four years after birth?

3 inches per month

3 inches per year

3 feet per month

3 feet per year

anonymous · Answer

3 inches per year!

mathstudent55 · Answer

The last two choices are obviously not correct.

ankit042 · Answer

Think what is the average height of human....It will help you eliminate a few choices

mathstudent55 · Answer

Now look at the first choice.
3 inches per month means 12 * 3 inches per year. That means 3 ft per year. This is the same as the 4th choice and cannot be.

3 inches per year means 4 * 3 inches in 4 years. That is one foot in 4 years. That seems reasonable.