C maybe bro I’m not really sure tho think I’m messing up
Answer:

Step-by-step explanation:
we are given that

since m is greater than or equal to 0 it's a positive number therefore, the square root of m is defined and recall that √x²=|x| thus

remember that,|a|•|x|=|ax| hence,

and we're done!
It should increase but I’m between stays the same or increase, I’m not sure in a 100% sorry...
Answer:
f(13)=2x-1, x=7
Step-by-step explanation:
7*2=14, 14-1=13
vise versa
f(13)=2(7)-1
5+5=10+20=30 :) that’s your answer