Question

The average weight of a male child's brain is 970 grams at age 1 and 1270 grams at age 3.† (a) Assuming that the relationship between brain weight y grams and age t years is linear, write a linear model for the data. (b) What is the slope? m = What does it tell you about brain weight? The weight of a male human brain is decreasing by m grams/year. A human male's brain weight is constant for his entire lifespan. The weight of a male human brain is increasing by m grams/year. A human male's brain reaches a maximum weight at age 3. At birth, a human brain weighs 970 grams. (c) Use your model to estimate the average brain weight at age 2. g (d) Use your school's library, the Internet, or some other reference source to find the actual average brain weight at age 2. How close was your estimate? This answer has not been graded yet. (e) Do you think your model could be used to determine the average brain weight of an adult? Explain.

Answer 1