Which situation shows a constant rate of change? a. the cost of a bunch of grapes compared with its weight b. the number of tickets sold compared with the number of minutes before a football game c. the outside temperature compared with the time of day d. the height of a bird over time

a) the cost of a bunch of grapes compared with its weight

A. The cost of a bunch of grapes compared with its weight  

Step-by-step explanation:

We are required to find the situation which shows a constant rate of change.

According to the options, we have,

B. The number of tickets sold compared to the number of minutes before a football game

In this case, we see that, the rate of change between the number of minutes and the number of tickets sold may vary and need not be constant.

C. The outside temperature compared with the time of day  

Here, the temperature changes with different values throughout the day and this case will not give a constant rate.

D. The height of a bird over time

The height of the bird over a time would not give a constant rate.

Further, we have that,

The cost of a bunch of grapes compared with its weight will always give a constant rate as whenever the weight changes, the cost will change accordingly.

Hence, Option A is correct.

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