I'm not exactly sure how to approach this problem because it does not have an output, but we can combine like terms.
Add all the x, y, and z together with the numbers.
3x-3y+7z is the final answer.
Answer:
12
Step-by-step explanation:
The formula to find the area of a circle is:


Where "r" is the radius of the circle.
In this case, the radius is 2, and as per what is given in this problem (what the problem asks one to use), pi is rounded down to 3.
The equation will be:
3 * 2^2
Simplify, remember the order of operations:
3 * 4
12
Step-by-step explanation:
P(t) = 12,000 (2)^(-t/15)
9,000 = 12,000 (2)^(-t/15)
0.75 = 2^(-t/15)
ln(0.75) = ln(2^(-t/15))
ln(0.75) = (-t/15) ln(2)
-15 ln(0.75) / ln(2) = t
t = 6.23