Hester sells televisions. She earns a fixed amount for each television and an additional $15 if the buyer gets an extended warranty. If Hester sells 15 televisions with extended​ warranties, she earns $1,275. How much is the fixed amount Hester earns for each​ television?

What is the point of inflection for the function f(x)=2cos4x on the interval (0, pi/2)

The width of a rectangle is half as long as the length. the rectangle has an area of 18 square feet. what are the length and width of the rectangle?

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