120 -
80
Interpret the graph of a quadratic function.
6. A small independent movie company determines
the profit P for producing n DVD copies of a
recent release is P= -0.02n2 + 3.40n – 16.
P is the profit in thousands of dollars and n is in
thousands of units.
a. How many DVDs should the company produce
to maximize the profit?
b. What will the maximum profit be?
Profits (thousands)

Arefrigeration system at your company uses temperature sensors fixed to read celsius (°c) values, but the system operators in your control room understand only the fahrenheit scale. you have been asked to make a fahrenheit (°f) label for the high temperature alarm, which is set to ring whenever the system temperature rises above –10°c. what fahrenheit value should you write on the label?