Answer:
false
Step-by-step explanation:
X squared minus 5 is not necessarily prime
Answer:
f(9) =21
Step-by-step explanation:
I will assume you want to find f(9) when x=9
Let x=9
f(9) = 2(9) +3
= 18+3
=21
f(9) =21
The answer is in the image:
The answer is C. 7.1 feet.
I hope this helps.