Solve for x.
1 answer:
You might be interested in
Answer:
Both the equation and its inverse are functions.
Step-by-step explanation:
In order to solve this problem lets first find the inverse of this function. This is done below:
We first swap x and y.
We now isolate y.
Functions are relations between two groups of numbers, in such a way that one number on the input group must generate a singular answer from the output group. This holds true for both f(x) and its inverse, therefore both are functions.
ANSWER
B.) 72
EXPLANATION
Recall the expansion for the factorial notation:
We want to simplify
Let us expand the numerator up to 7! while maintaining the denominator.
When we cancel out the common factors,we obtain:
This simplifies to
The correct answer is B.