Answer:
a) 41
b) -31
c) 25/3
Step-by-step explanation:
The instructions explain what a function is pretty clearly.
Basically, whatever is in the parentheses next to the
, you plug in to the expression that is the function.
ex: 

Okay, onto the problems:
a) 
First, plug in 14, since that is given:

and solve.


So, 41 is the answer to a.
b) Do the same thing you did in problem a. Plug in the number inside the parentheses and solve.



-31 is the answer to b.
c) For this problem, you have to do a bit of algebra.
First, take the base function f(x):

Then, set f(x) = 24:

and solve by isolating x.



25/3 is the answer to c.
It's A because to remove the radical you do x-2 squared and 7 squared which you will get x-2=49 and then subtract -2 from 49 which gives you 51
The answer is 44%.!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
(k + 9)(k - 8)
Step-by-step explanation:
Given
k² + k - 72
Consider the factors of the constant term ( - 72) which sum to give the coefficient of the k- term ( + 1)
The factors are + 9 and - 8, since
9 × - 8 = - 72 and 9 + 8 = + 1, hence
k² + k - 72 = (k + 9)(k - 8)