A cookbook originally cost $13.00. Yesterday, Marta bought it at 40% off. How much was deducted from the original price?

$0.40

$4.20

$5.20

$7.80

Lesson 9-3 for items 8-10, a square is drawn in the coordinate plane, with vertices as shown in the diagram. then the square is reflected across the x-axis. -2 4 8. the function that describes the reflection is (x, y) - a. (x, y-3). b. (x, y-6). c. (-x, y). d. (x,- y).