18) \( 858 \leq 11 r \)

To solve the inequality \( 858 \leq 11r \), divide both sides by 11. This gives us \( r \geq \frac{858}{11} \). Performing the division, \( \frac{858}{11} = 78 \). Therefore, the solution to the inequality is \( r \geq 78 \). Now, let's not forget that inequalities can represent a range of solutions, so in this case, any value of \( r \) that is 78 or greater will satisfy the inequality! You can think of \( r \) as being invited to a party where everyone who shows up with a value of 78 or above gets in!