Question

The weight, in pounds, of a baby in the first six months of life can be modeled by the function f(x) = 1.5x +7, where x is the age of the baby

in months. According to this model, what is the weight, in pounds, of a baby at age 5 months?

A. 8.5
B. 12.0
C. 13.5
D. 14.5

Answer 1

To find the weight of a baby at age 5 months, we can substitute x=5 in the given function:

f(5) = 1.5(5) + 7

f(5) = 7.5 + 7

f(5) = 14.5

Therefore, the weight of a baby at age 5 months is 14.5 pounds. Answer: D.