Answer:
The pooled estimate is given by the following formula:

And replacing we got:

Step-by-step explanation:
We have the following info given:
n1 = 100,
n2 = 100,
x1 = 42,
x2 = 45
The pooled estimate is given by the following formula:

And replacing we got:

Answer:
1. complex fraction Ex: 1/4/3- one fourth over 3 if that makes more sense
2. terminating decimal Ex: 0.5
3. additive inverse Ex: -14+14= 0
3/5=6/10 so Naomi got 138.
Luke got 69.
And Natalie got 23.
The answer is 150 parents. Because 450/3=150