So you just subsitute -3 for x
f(-3)=-(-3)+15
f(-3)=3+15
f(-3)=18
answer is C
18
Step-by-step explanation:



HOPE IT HELPS YA
Well you can use the Pythagorean Theorem Formula a

+b

=c

. Just plug in the first 2 least numbers into a and b, and see if your answer(c) is equal to the last number. Hope I helped!
Answer:
2160°
Step-by-step explanation:
The sum of the interior angles of a polygon is
sum = 180° (n - 2) ← n is the number of sides
Here n = 14, so
sum = 180° × 12 = 2160°
I believe the answer is A because 3x is basically 3 on the x axis plus 2 and that graph have the lines meet at 5x