Question

an electrician is hired to install a ceiling fan. she estimates that the installation will take no more than 45 minutes if the house is up to building code. if the house is not up to building code, she estimates that the installation will take longer than 120 minutes. which graph represents the number of minutes it could take her to install the fan?

Explanation:

Step1: Define time conditions

Let $t$ = installation time (minutes).
Condition 1: $t \leq 45$ (code-compliant house)
Condition 2: $t > 120$ (non-compliant house)

Step2: Match to number line rules

• For $t \leq 45$: Closed dot at 45, arrow left.
• For $t > 120$: Open dot at 120, arrow right.

Answer:

The fourth option (left arrow with closed dot at 45, right arrow with open dot at 120)