The relative growth rate of world population has been decreasing steadily in recent years. On the basis of this, some population models predict that the world population will eventually stabilize at a level that the planet can support. One such logistic model is: P(t) = 73.2 6.15 + 9e−0.2t , where t = 0 is the year 2000 and population is measured in billions. (a) (3 points) What would population does this model predict for the year 2100? (b) (3 points) What would population does this model predict for the year 2300? (c) (4 points) Evaluate P(t) for large values of t. According to this model, what size does the world population approach as t →

since your problem is x^4 = 81, what you have to undeo is the "to the fourth power" part.

the inverse (opposite operation) of "to the fourth power" is "to the fourth root".

  (x^4) ^ ¼   = 81 ^ ¼  

  81 = 3^4     so (3 ^ 4) ^ ¼   =   3 ^ 1   = 3

by hand: (3 ^ 4) ^ ¼   =   3 ^ (4 x ¼) = 3 ^ 1   = 3   (when you take a power to a power, multiply the exponents.)

or, do it by calculator. one way of finding the fourth root is to use ^ (1/4)

step-by-step explanation:

687.09 dollars       happy now

step-by-step explanation: 6870

1857 times .63 equals 1169.91 subtract that from 1857 you get 687.09

is should be y = 5x

step-by-step explanation:

correct me if im wrong

step-by-step explanation:

assume that you have 3 different side lengths.   apply the pythagorean theorem here:   square each of the two shortest sides; call them a and b, so that their squares are a² and b².   also square the longest side, calling the result c².

now, if a² + b² = c² is true, the triangle is a right triangle; otherwise it is not a right triangle.