Questions: Solve the given inequality. Write the solution set using interval notation, then graph it.
(5-2x)/5 ≥ -2
The solution set is
(Simplify your answer. Type your answer in interval notation.)
Transcript text: Solve the given inequality. Write the solution set using interval notation, then graph it.
\[
\frac{5-2 x}{5} \geq-2
\]
The solution set is $\square$
(Simplify your answer. Type your answer in interval notation.)
Solution
Solution Steps
To solve the inequality \(\frac{5-2x}{5} \geq -2\), we first isolate \(x\) by performing algebraic operations. We multiply both sides by 5 to eliminate the fraction, then solve the resulting linear inequality. Finally, we express the solution in interval notation.
Step 1: Understand the Inequality
We are given the inequality:
\[
\frac{5-2x}{5} \geq -2
\]
Our task is to solve this inequality for \(x\) and express the solution in interval notation.
Step 2: Eliminate the Fraction
To eliminate the fraction, multiply both sides of the inequality by 5:
\[
5 \cdot \frac{5-2x}{5} \geq 5 \cdot (-2)
\]
This simplifies to:
\[
5 - 2x \geq -10
\]
Step 3: Isolate the Variable Term
Subtract 5 from both sides to isolate the term with \(x\):
\[
5 - 2x - 5 \geq -10 - 5
\]
Simplifying gives:
\[
-2x \geq -15
\]
Step 4: Solve for \(x\)
Divide both sides by -2. Remember, dividing or multiplying both sides of an inequality by a negative number reverses the inequality sign:
\[
x \leq \frac{-15}{-2}
\]
Simplifying the right side gives:
\[
x \leq \frac{15}{2}
\]
Step 5: Express the Solution in Interval Notation
The solution \(x \leq \frac{15}{2}\) can be expressed in interval notation as: