1.The revenue for an amusement park can be modeled by R(x) = 80x -0.04x' where x is the number of people attending the park. The cost to operate the park can be
modeled by C(x) = 4.75x + 275. If profit is determined by subtracting cost from
revenue, which function models the profit of the amusement park?
A. P(x) = -0.04x + 75.25x – 275
B. P(x) = -0.04x + 75.25x + 275
C. P(x) = 0.047° - 75.25x - 275
D. P(x) = 0.04x+ + 75.25x + 275

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