Algebra-1

To determine if there is a constant rate of change between the number of minutes used and the cost of long distance calls, we need to calculate the rate of change of cost per minute.

Let's examine the given data:

When minutes=3, cost=3.3

When minutes=4, cost=4.4

When minutes=7, cost=7.7

When minutes=8, cost=8.8

Now, calculate the rate of change (slope) between each pair of data points:

Between (3 minutes, 4.4):

Between (4 minutes, 7.7):

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