When you think of domain, you always think x-values. so the domain values for this graph is (-∞,∞).
So we just divide 165 by 3.75 to get 44 copies per minute.
The answer is 72 beats per minute because 360/5= 72
Roots test tells us to take the factors of the 20 divided by the factors of the coefficient of the the first.
factors of 20 are 1,2,4,5,10,20
factors of 1 are 1
so plus or minus 1/1, 2/1, 4/1, 5/1, 10/1, 20/1 are all possible rational zeros
