Question

1. On average, infant girls weigh 3.4 Kg at birth and gain 0.7 Kg each month for the first six months. Find the linear model that relates the infant's age and her weight. Find the weight of the baby girl after four-and-a-half months.

2. Determine the time it will take for an investment to triple if it is invested at 3.5% daily.

Answer 1

(1)

Let's assume

number of months=x

weight of infants=y

Since, this is linear model

so, we can use

we are given

b=3.4

m=0.7

now, we can plug values

So, Linear model is:

Weight:

we can plug x=4.5

..........Answer

(2)

we can use formula

r=3.5%=0.035

A=3P

now, we can solve for t

so, we get

............Answer