Question

which table represents the rate at which the bakery uses butter? choose 1 answer: a days butter (kg) 5 100 7 140 30 600 b days butter (kg) 10 200 20 420

Explanation:

Step1: Determine the rate

From the number lines, in 1 day, the bakery uses 20 kg of butter (since at day 0, butter is 0 kg, and at day 1, butter is 20 kg? Wait, no—wait, the time line has 0 and 1 days, and the butter line has 0 and 20 kg. So the rate is $\frac{20\ \text{kg}}{1\ \text{day}} = 20\ \text{kg/day}$.

Step2: Check Table A

For Table A:

• At 5 days: $5 \times 20 = 100$ kg (matches 100)
• At 7 days: $7 \times 20 = 140$ kg (matches 140)
• At 30 days: $30 \times 20 = 600$ kg (matches 600)

Step3: Check Table B

For Table B:

• At 10 days: $10 \times 20 = 200$ kg (matches 200)
• At 20 days: $20 \times 20 = 400$ kg, but Table B has 420 kg (does not match)

Answer:

A. Days | Butter (kg)
5 | 100
7 | 140
30 | 600