5(-2/3) this is it and I don’t know it

Can someone pls ! pls answer all. no explanation needed..

In a sale there is 25% of all prices a chair costs £45 in sale how much was it before the sale

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).