The function f(x)=-4x^2+18x+16 models the predicted sales of a hat after x price increases. Use the table showing actual and pre
dicted sales to find the residuals for the model.
1 answer:
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It is about 41.4% according to my TI-83/84 calculator.
A.
B.
Megan's solution isn't correct.
The first mistake: she subtracted 5x from the right-hand side of the equation, but added 5x to the left-hand side.
The second mistake: she divided the right-hand side of the equation by 11, but didn't divide the left-hand side.
The correct solution:
B.
Megan's solution isn't correct.
The first mistake: she subtracted 5x from the right-hand side of the equation, but added 5x to the left-hand side.
The second mistake: she divided the right-hand side of the equation by 11, but didn't divide the left-hand side.
The correct solution: