The average rate of change of the function in the given interval -3 ≤ x ≤-1 is 10.
<h3>What is the average rate of change?</h3>
The average Rate of Change of the function f(x) can be calculated as;
![f(x) = \dfrac{f(b) - f(a)}{b-a}](https://tex.z-dn.net/?f=f%28x%29%20%3D%20%5Cdfrac%7Bf%28b%29%20-%20f%28a%29%7D%7Bb-a%7D)
Interval -3 ≤ x ≤-1
a = -3, b = -1
f(a) = f(-3) = -20
f(b) = f(-1) = 0
Step 2: Find Average
![f(x) = \dfrac{f(b) - f(a)}{b-a}\\\\\\f(x) = \dfrac{f(-1) - f(-3)}{-1-(-3)}\\\\\\f(x) = \dfrac{0 - (-20)}{2}\\\\f(x) = 10](https://tex.z-dn.net/?f=f%28x%29%20%3D%20%5Cdfrac%7Bf%28b%29%20-%20f%28a%29%7D%7Bb-a%7D%5C%5C%5C%5C%5C%5Cf%28x%29%20%3D%20%5Cdfrac%7Bf%28-1%29%20-%20f%28-3%29%7D%7B-1-%28-3%29%7D%5C%5C%5C%5C%5C%5Cf%28x%29%20%3D%20%5Cdfrac%7B0%20-%20%28-20%29%7D%7B2%7D%5C%5C%5C%5Cf%28x%29%20%3D%2010)
Therefore, the average rate of change of the function in the given interval -3 ≤ x ≤-1 is 10.
Learn more about average rate;
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As far as I know 0 IS a rational number. The only ones that are not rational are negative numbers. :) Though I could be wrong.....
Answer:
It seems there's more information in you question that you haven't posted.
7 months = 7 * (365/12) = 213 days
The half-life of chromium 51 is 27.7 days.
After 7 months, chromium 51 will have undergone 7.69 half-lives.
To solve for the ending amount we'll use the formula:
Ending Amount = Beginning Amount / 2^n where 'n' = # of half-lives
We'll say the beginning amount =1
Ending Amount = 1 / 2^7.69
Ending Amount = 0.0048426082
Basicaly if you started with 1 gram of chromium 51, after 7 months you would have 0.0048426082 grams.
Source: https://www.1728.org/halflife.htm
Step-by-step explanation:
Answer:
64?
Step-by-step explanation:
3/5= 40
40:5=8
8 x 3=24
24 x 40=64
dunno if it's really correct so....
$1.4-0.52=$0.88
So, Joel makes $0.88 profits for every sales.
To overcome rent fee, We need $36.
36/0.88= 40.90909....
So, Joel needs to sell at least 41 iceCream on country fair to make profits.