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Answer:
x^4 - 81 = 0
(x² - 9)(x² + 9) = 0
Notice that the first of these is itself a difference of two squares:
(x - 3)(x + 3)(x² + 9) = 0
So the solutions are x = 3, x = -3, x = 3i, x = -3i
ratio of vertical change between 2 points
5≤1e+ .25p
E represents erasers and p pencils
Answer:
Step-by-step explanation:
Here we want to present growth as a function of time; the growth depends upon the number of days that go by. So, growth(y) is the dependent variable and time (in days, x) is the independent variable.
