You buy school clothes during a sale when everything in the store is 15% off. Which of the following could describe your total cost?
(29.99 + 18.65 + 32.59) 0.15 = 0
(29.99 + 18.65 + 32.59) 0.85 = 0
(29.99 + 18.65 + 32.59). 1.15 = 0
(29.99 + 18.65 + 32.59) - 0.15(29.99 + 18.65 + 32.59) = 0
1.15(29.99 + 18.65 + 32.59) - 0.15(29.99 + 18.65 + 32.59) = C
0.15(29.99 + 18.65+ 32.59) (29.99 + 18.65 + 32.59) = 0

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