Answer:
Q1: $1.2 Q2: 5 pens
Step-by-step explanation:
Answer:

Step-by-step explanation:
The given function is
f(x) = 4x
As we know
f(x) = y, which implies x= 
Therefore,
y = 4x
x = 
as x= 
So,

replacing y by x in the above expression

So our inverse function is 
Answer:
B
Step-by-step explanation
the answer comes to
and 15 is the only answer below 20
Answer:
no it does not you can identify that by doing the vertical line test
Step-by-step explanation:
Answer:
x = 14
Step-by-step explanation:
You want to solve for x, right?
(x-5)^(1/2)+5=2
You have it right so far.
(x - 5)^(1/2) = -3
(x - 5) = (-3)^2
x - 5 = 9
x = 9 + 5 = 14