Answer:
1. 24 2. 70
Step-by-step explanation:
........not sure......
Answer:
Step-by-step explanation
I get the same answer you do, but I'm not at all certain I'm correct. I would have done it just as you did letting each y value define the new x value and then putting the - on the left in at the very end.
f(1) = 3
f(3) = -1
f(-1) = 7
But there is a minus in front of the left most f. That would make it - 7
ANSWER
A. 73
EXPLANATION
The given expression is

We substitute x=5 and y=3 to obtain:

This simplifies to,


The correct choice is A.
Answer:
9.9
Step-by-step explanation:
a^2+b^c=c^2
15^2+b^2=18^2
225+b^2=324
b^2=99
b=9.94
x=9.94