132 in
Step-by-step explanation:
- Take the total radius = 18+3 = 21= R (say)
- Simply use the formula for the circumference i.e. 2*pi*R
- 2*22/7*21= 132
its -5 so it is A,( -19/2, -5)
Given:
The volume of water in a tank is modeled by the function

where, x is the number of minutes after the faucet filling the tank is turned on.
To find:
The y-intercept and what does it represent in this context?
Solution:
We have,

Substituting x=0, we get



Therefore, the y-intercept is 2 and it represents the volume of water in a tank before the faucet filling the tank is turned on.
You need to find 8.45% of each phone:
A) 0.0845·20=1.69
B) 0.0845·25=2.11
C) 0.0845·10=.85
D) 0.0845·18=1.52
Phone B is 2.11 so your answer is B :)