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Step-by-step explanation:
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The average rate of change over the interval 
is 2.17
Explanation:
Given that the cost of a floral bouquet after a discount is given by the function 
We need to determine the average rate of change over the interval
The average rate of change can be determined using the formula,
where 
and 
Substituting the value of a and b in the function, we get,
Hence, substituting these values in the formula, we get,
Simplifying, we get,
Dividing, we have,
Thus, the average rate of change over the interval is 2.17
Answer:
The range of the graph is:
-∞ < y < 2
Hence, option C is correct.
Step-by-step explanation:
We also know that range is the set of values of the dependent variable for which a function is defined.
In other words,
Range refers to all the possible sets of output values on the y-axis.
From the given graph, we can easily observe the vertical extent of the graph is all range values between -∞ and 2.
In other words,
The range of the function lies in the interval: (
-∞, 2)
Therefore, the range of the graph is:
-∞ < y < 2
Hence, option C is correct.
Answer:
2.75
Step-by-step explanation:
Here, we want to find which part of the formula corresponds to the cost of movie tickets in 1980
The expression to find the cost is
2.75 + 0.10x
Now, x is the time since 1980
1980 is thus the starting position. The value of x at this point is 0, we simply thus make a substitution;
2.75 + 0.1(0)
=
2.75
B because it is in the 10ths place
