Answer:
Top right answer
Step-by-step explanation:
He added the -x to 4x when he should have subtracted.
Answer:
10
Step-by-step explanation:
For an odd number of values, the median is the middle value when you write the values in ascending order.
5, 7, 9, 10, 16, 17, 20
The median is 10.
Answer:

Step-by-step explanation:
Given



--- inverse
Required

For two functions f(x) and g(x) where f(x) and g(x)are inverse;

So, by comparison:

Answer:
2988
Step-by-step explanation: