Question

yesterday, erica babysat for 3 hours. let p be the amount erica earns in dollars per hour. which model represents the amount erica earned from babysitting? three models shown: first with p and 3, second with three (1/3)p, third with three p

Explanation:

Step1: Understand Earning Formula

Earnings = Hourly rate × Hours worked. Here, hourly rate is \( p \), hours = 3. So total earnings = \( 3 \times p = 3p \).

Step2: Analyze Each Model

• First model: Combines \( p \) and 3 (addition, not multiplication) → Incorrect.
• Second model: Three \( \frac{1}{3}p \) terms. Sum: \( \frac{1}{3}p + \frac{1}{3}p + \frac{1}{3}p = p \) → Incorrect.
• Third model: Three \( p \) terms. Sum: \( p + p + p = 3p \) → Matches total earnings.

Answer:

The third model (with three rectangles labeled \( p \))