Answer:
• Let x be the number of members
• In inequalities, at least means greater or equal ( ≥ )
• To get the average, substitute for x as 99 and amount collected by each member
Cube root (27a^12)
Cube root 27 = 3 because
3 * 3 * 3 = 27
Cube root a^12 = a^4 because
a^4 * a^4 * a^4 = a^12
ANSWER
3a^4
x^2 - 4
------------------------------
x + 7 | x^3 + 7x^2 - 4x - 28
x^3 + 7x^2
------------------
0 - 4x - 28
-4x - 28
-------------
0
Now we know that
x^3 + 7x^2 - 4x - 28 = (x^2 - 4)(x + 7)
x^2 - 4 can be factored since it is the difference of two squares.
x^2 - 4 = (x + 2)(x - 2)
The complete factoring is:
x^3 + 7x^2 - 4x - 28 = (x +2)(x - 2)(x + 7)
Answer:
P(x) = - 1.7x + 55
Step-by-step explanation:
x denotes the years that have passed since 2000. So for year 2000, x = 0
Therefore we have that when x₁ = 0, y₁ = 55. From the information given by the problem we know that the slope m is -1.7.
So by substituting these values in the formula y-y₁ = m( x - x₁) we get:
y - 55 = -1.7 (x - 0)
y - 55 = -1.7x
y = - 1.7x + 55
Thus our function P(x) that models the percentage of residents who regularly used the news outlet x years after 2000 is
P(x) = -1.7x + 55
