EDGE Math 8

Given the function $f (x) = 0.45 x + 6.2,$ where x represents the age of a baby in months and $f (x)$ is his/her weight in pounds (lbs.), determine each unknown value. Choose your answer:

1.	The weight of the baby at birth

6.65 lbs.

6.47 lbs.

6.2 lbs.

None of the choices

Answer: 6.2 lbs.

2.	The weight of the baby after 6 months

12.47 lbs.

8.9 lbs.

7.1 lbs.

None of the choices

Answer: 8.9 lbs.

3.	The age of the baby when he/she would weigh 7 lbs.

9.35 months

3.15 months

1.78 months

None of the choices

Answer: 1.78 months

4.	The age of the baby when he/she would weigh 10 lbs.

8.44 months

10.47 months

10.7 months

None of the choices

Answer: 8.44 months

5.	The age of the baby when he/she would weigh 12 lbs.

11.6 months

12.89 months

17.8 months

None of the choices

Answer: 12.89 months

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