Answer:
pretty sure its a
Step-by-step explanation:
I do not have a explanation sorry bro
Answer:

Step-by-step explanation:
Given
--- sample
--- degeneration rate
From the findings, we have:
--- tested positive
--- total test
Required
The positive predicted value (PPV)
This is calculated using:

i.e.


Express as percentage


Answer:
f(3)=11
Step-by-step explanation:
f(x) = 2x + 5
to find f(3) we simply plug in 3 where ever x is
So f(3) = 2(3) + 5
==> multiply 2 and 3
f(3) = 6 + 5
==> add 6 and 6
f(3) = 11
Reverse the formula of pi x r^2 = area to find r, the radius.
Then, use r in the formula 2pi x r to calculate the circumference.