Predict The cost of a school photo package includes $40 for the photo shoot, plus the
1 answer:
Answer:
1. Linear; 2. C = 2.50x + 40
Step-by-step explanation:
1. Prediction
Yes, it is a linear function, because each additional photo adds the same amount to the cost.
2. Equation
Let C = the cost of the photo package
and x = the number of photos
Then 2.50x = the cost of the photos
And $40 = cost of photo shoot
Then C = 2.50x + 40
The figure below shows that the graph of your equation is a straight line.
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the value of f-1(27) is 9.
In order to find this answer, we first have to find the inverse function (since that is what f-1 means). To do this, we switch the f(x) value and the x. Then we solve for the new f(x). The result is the inverse function. The work for this is below.
f(x) = 3x ----> Switch the f(x) and the x.
x = 3f(x) ---> divide by 3.
f-1(x) = .
Now that we have this, we can plug in 27 (the number in parenthesis) and find the result.
f-1(x) =
f-1(27) =
f-1(27) = 9