Answer:
Rational
Step-by-step explanation:
It is always going to be RATIONAL.
All you have to do is the amount she bought divided by 0.05 and then add the answer you get to the amount she bought each time
Answer: Second option
Step-by-step explanation:
You need to make the multiplication of the function
and the function
. Then:

You need to apply the Distributive property:

Therefore, the domain will be all the number that make the denominator equal to zero.
Then, make the denominator equal to zero and solve for x:

Therefore, the domain is: All real values of x except 
Answer:
A. 7
Step-by-step explanation: