The order of the 3 books does not matter so its the number of combinations of 3 from 45
b is the correct choice
Answer:
Yes
Step-by-step explanation:
Example
x+2 is a factor of 2x+4.
2(x+2) = 2x+4.
X - number of customers

There can't be a fraction of the number of people, so there must be some mistake in the question.
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Answer:
-37
Step-by-step explanation:
Not sure what the method is called, but you do this.
substitute the slope into slope formula
y= -5x+b
substitute the points you have for x and y
-12= -5(-5)+b
solve
-12= 25+b
-37= b