Answer:

Step-by-step explanation:
Using the formula for the exponential decay that is
, we have N=
,
and k=0.1374.
Thus,
becomes



Taking log on both sides, we get




Answer:
a) There will be approximately a water depth of 7.5 meters after 3h
b) Approximately 2.5 hours have passed when there is 8 m of water in the tank.
Step-by-step explanation:
a) Look for the y-value when the x-value is 3.
b) Look for the x-value when the y-value is 8.
*The y-axis is the depth (m), and the x-axis is the time (h).
Answer: OPTION B.
Step-by-step explanation:
Given the equation
you can find an equivalent equation by simplifying it.
You need to remember the multiplication of signs:

Now you can apply the Distributive property:

Simplifying the equation, you get:

You can observe that this equivalent equation matches with the equation provided in option B.
Answer:
x=-14
Step-by-step explanation:
-x-11^2+1
-x-11^3
-x^14
x=-14