Answer:
Yes.
Step-by-step explanation:
The conversion of Kilograms to Pounds is 1kg : 2.2lbs. So that means that if the weight of the baby doubles in pounds, then the weight would also double in kilogram
Answer:
5(3-x)
Step-by-step explanation:
There are a number of ways you can write the piecewise function. Here is one of them:

It could also be something like
p(t) = 7t + 3.50×max(0, t-40)
where the max(x,y) function returns the larger of x or y.
Answer:
34 weeks
Step-by-step explanation:
Hello!
We can set up an equation to solve for the number of weeks.
Let w = the number of weeks he is saving up.
The equation is 
- 315 is the target amount
- 115 is the current amount
- 10w is the rate of growth
- 140 is the current debt
<h3>Solve for w</h3>
He needs to save up for 34 weeks.
(7/8)*(9/10)=7*9/(8*10)=63/80