F(-5) just means that your substituting the number -5 for every x value. So if you have x+1 this would be -5+1 which is -4
Use the pythagorean theorem a.k.a

c is the hypotenuse while a & b are the legs


subtract 225 from 289

square root both b and 64
the other leg is equal to 8
Complete Question
The complete question is shown on the first uploaded image
Answer:
The arc PR is 
Step-by-step explanation:
A descriptive diagram of the diagram given in the question is shown on the first uploaded image
In the circle tangent
, secant
and chord
are drawn
given that
,
The objective is to determine PR
From the diagram we see that MQ is a straight which implies that the the angle


Now looking at triangle NMP we see that
Now the measure of an inscribed angle is half the measure of its arc intercepted, this statement is the inscribed angle theorem
So with the knowledge
Then

Looking at the diagram we see that




Answer:
the answer is a. 147
Explaination:
A triangle always has a sum of 180°.
We already have the angle of two sides give.
10° and 23°
To find the last missing side, you add 10° and 23°, and minus the result from 180°.
10+23= 33
180-33 = 147