Answer:
C) 3(x+7)²
Step-by-step explanation:
3c-d
3c-(-c+7)
3c+c-7
4c-7
Final answer: 4c-7
Answer:
P(t) = 27000 * (1/9)^(t/4)
Step-by-step explanation:
This problem can me modelled with an exponencial formula:
P = Po * (1+r)^t
Where P is the final value, Po is the inicial value, r is the rate and t is the amount of time.
In this problem, we have that the inicial population/value is 27000, the rate is -8/9 (negative because the population decays), and the time t is in months, so as the rate is for every 4 months, we use the value (t/4) in the exponencial.
So, our function will be:
P(t) = 27000 * (1-8/9)^(t/4)
P(t) = 27000 * (1/9)^(t/4)
Write and solve an equation of ratios:
5 *10^9 years 100 m
------------------- = --------------
5 * 10^3 yrs x
Reducing the first fraction,
100 m
10^6 = ----------
x
100 m
Solving for x, x = ------------- = 10^(-4) m, or [10^(-1)] * [10^(-3))]
10^6
this comes out to one tenth of 1 millimeter.
Answer:
$11,520
Step-by-step explanation:
4 * 8 * 12 = 384 cu ft.
384 * 7.5 = 2880 gallons
There are 16 cups in a gallon
2880 * 16 = 46,080 cups
46,080/2 * .50 = $11,520