There is a total of 30 erasers
To find the domain you need to set the denominator not equal to zero
The answer is 8/17 because you have to change the fractions to improper fractions then change the division sign to a multiplication sign. Then change the second fraction by flipping the two numbers then multiply and reduce.
The link!:
https://gov.12q
F x (x + h) - fx/h
fx +fh - fx /h
fh/h
f
So f is the answer