Answer:
123
Step-by-step explanation:
The given function is :

We need to find the value of f(9). It can be done by putting x = 9 in the above function as follows :

So, the value of f(9) is 123.
Answer:
x = 6
Step-by-step explanation:
you need to solve for x. so you have to get it alone
-1 = x - 7
add 7 to each side
6 = x
Answer:i think it may be 526.25
Step-by-step explanation:
Answer:$29
Step-by-step explanation:-4 + 29 = 25. The overall change to his account is 29 dollars.