A revenue function can be described by the equation () = −22 + 10 − 5 and the cost function can be described by the equation () = 2 − 4, where x represents the number of units sold in thousands. a. How many units have to be sold in order to maximize revenue?

b. What is the profit function?

c. How many units have to be sold in order to maximize the profit? What is the maximum profit?

A(1,1) b(-3,0) c(-4,-1) d(3,-2) drag it to correct position

Consider the following geometry problems in 3-space enter t or f depending on whether the statement is true or false. (you must enter t or f -- true and false will not work.) f equation editorequation editor 1. a plane and a line either intersect or are parallel t equation editorequation editor 2. two planes parallel to a third plane are parallel f equation editorequation editor 3. two lines either intersect or are parallel f equation editorequation editor 4. two planes orthogonal to a third plane are parallel f equation editorequation editor 5. two planes orthogonal to a line are parallel f equation editorequation editor 6. two planes either intersect or are parallel f equation editorequation editor 7. two lines orthogonal to a third line are parallel t equation editorequation editor 8. two lines parallel to a third line are parallel t equation editorequation editor 9. two planes parallel to a line are parallel f equation editorequation editor 10. two lines parallel to a plane are parallel f equation editorequation editor 11. two lines orthogonal to a plane are parallel

Write the equation in general quadratic form: plz !