Explore IDNLearn.com's extensive Q&A database and find the answers you're looking for. Our community provides timely and precise responses to help you understand and solve any issue you face.

Select the correct answer.

What is the solution set of this inequality?
[tex]\[ 8(x - 5) - 3x \geq -20 \][/tex]

A. [tex]\( x \geq -3 \)[/tex]

B. [tex]\( x \leq 12 \)[/tex]

C. [tex]\( x \geq 4 \)[/tex]

D. [tex]\( x \leq -12 \)[/tex]


Sagot :

To find the solution to the inequality [tex]\( 8(x - 5) - 3x \geq -20 \)[/tex], follow these steps:

1. Distribute the 8 inside the parentheses:
[tex]\[ 8(x - 5) = 8x - 40 \][/tex]
So the inequality becomes:
[tex]\[ 8x - 40 - 3x \geq -20 \][/tex]

2. Combine like terms:
[tex]\[ 8x - 3x - 40 \geq -20 \][/tex]
Simplifying this, we get:
[tex]\[ 5x - 40 \geq -20 \][/tex]

3. Isolate the [tex]\( x \)[/tex] term by adding 40 to both sides:
[tex]\[ 5x - 40 + 40 \geq -20 + 40 \][/tex]
Which simplifies to:
[tex]\[ 5x \geq 20 \][/tex]

4. Solve for [tex]\( x \)[/tex] by dividing both sides by 5:
[tex]\[ x \geq \frac{20}{5} \][/tex]
Which gives us:
[tex]\[ x \geq 4 \][/tex]

Thus, the solution set for the inequality [tex]\( 8(x - 5) - 3x \geq -20 \)[/tex] is [tex]\( x \geq 4 \)[/tex]. Therefore, the correct answer is:

C. [tex]\( x \geq 4 \)[/tex]