Question

write an inequality for the sentence.
the light bulb must be at least 60 watts.
options:
a ( l leq 60 )
b ( l > 60 )
c ( l geq 60 )
question 3
graph the inequality on a number line.
( f geq 6 )

Explanation:

Step1: Understand "at least"

"At least 60" means the value (let \( l \) be the wattage of the light bulb) is greater than or equal to 60. So the inequality should represent \( l \) being 60 or more.

Step2: Analyze options

• Option a: \( l \leq 60 \) means "at most 60", which is incorrect.
• Option b: \( l > 60 \) means "more than 60" (excluding 60), but "at least" includes 60, so this is incorrect.
• Option c: \( l \geq 60 \) means "greater than or equal to 60", which matches "at least 60".

Answer:

c. \( l \geq 60 \)