Answer:
Factoring the term
we get 
Step-by-step explanation:
We need to factor the term: 
Factoring:

Taking (y+4) common

It cannot be further factored.
So, Factoring the term
we get 
Answer:
77 centimeters = 2.52625 feet
Step-by-step explanation:
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Answer:
Graph
Step-by-step explanation
Make a point in between -1 and 0. This will be your X value. Then on the y axis make a point on -1. Connect the 2 points with a line
Answer:
Null hypothesis: 
Alternative hypothesis: 
The statistic is given by:

And replacing we got:

And the best option would be:
2.19
Step-by-step explanation:
We have the following info given:
n1 = 150 n2 = 275

s1 = 15.98 s2 = 35.67
We want to test the following hypothesis:
Null hypothesis: 
Alternative hypothesis: 
The statistic is given by:

And replacing we got:

And the best option would be:
2.19