Plug in 3 for f(x)
f(3)=(3)²+7
f(3)=9+7
f(3)=16
Hoped this helped!
Answer:
824.65
Step-by-step explanation:
Step-by-step explanation:
The equation used to determine the amount of radioactive material left is

We are have the following given quantities:
t = 30 seconds
= 50 grams
HL = 6 seconds
Plugging these into our equation we get



I believe it is A. positive