Step 1- Multiply both sides by 8.
Step 2- Simplify 3 x 8 to 24.
Answer = x > 24
Answer:
c
Step-by-step explanation:
Answer:
Option C ![-6](https://tex.z-dn.net/?f=-6%3Cx%5Cleq%20-3)
Step-by-step explanation:
we have
![21\leq -3(x-4)](https://tex.z-dn.net/?f=21%5Cleq%20-3%28x-4%29%3C30)
The compound inequality can be divided into two inequality
-----> inequality A
----> inequality B
Solve inequality A
![21\leq -3x+12](https://tex.z-dn.net/?f=21%5Cleq%20-3x%2B12)
![9\leq -3x](https://tex.z-dn.net/?f=9%5Cleq%20-3x)
Divide by -3 both sides
when you multiply or divide both sides of an inequality by a negative number, you must reverse the inequality symbol
![-3\geq x](https://tex.z-dn.net/?f=-3%5Cgeq%20x)
Rewrite
![x\leq -3](https://tex.z-dn.net/?f=x%5Cleq%20-3)
The solution of the inequality A is the interval (-∞,-3]
Solve the inequality B
![-3x+12](https://tex.z-dn.net/?f=-3x%2B12%3C30)
![-3x](https://tex.z-dn.net/?f=-3x%3C18)
Divide by -3 both sides
when you multiply or divide both sides of an inequality by a negative number, you must reverse the inequality symbol
![x>-6](https://tex.z-dn.net/?f=x%3E-6)
The solution of the inequality B is the interval [-6,∞)
The solution of the compound inequality is
[-6,∞) ∩ (-∞,-3]=(-6,-3]
![-6](https://tex.z-dn.net/?f=-6%3Cx%5Cleq%20-3)
Using a calculator, the slope of the line of best-fit is of 7.2.
<h3>How to find the equation of linear regression using a calculator?</h3>
To find the equation, we need to insert the points (x,y) in the calculator.
In this problem, the points are given as follows:
(-4,-32), (-2,-8), (0,10), (2,8), (4,32).
Using the calculator, the equation is:
y = 7.2x + 2.
Hence the slope is of 7.2.
More can be learned about a line of best-fit at brainly.com/question/22992800
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