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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]
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]
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