Help please and explain your answer

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

Step-by-step explanation:

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,

D. 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.

B. 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.

C.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.

So, the correct answer is A

You are correct. It is choice A.

Explanation:

This is assuming the grapes are charged on some kind of weight basis, eg: charged per pound.

Let's say it costs $0.70 per pound, ie 70 cents per pound.

If x is the weight and y is the cost, then the equation would be y = 0.70x. The slope here is 0.70 to represent the rate of change. Each time x goes up by 1, y goes up by 0.70; meaning that each time you add a pound of grapes, the cost goes up by 70 cents.

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step-by-step explanation: