A hobby store is having a promotion on picture frames: buy 3 get the 4th frame at 75% off. Write an expression to represent the total cost for 4 frames in two different ways.

Aball is dropped from a height of 10m above the ground. it bounce to 90% of its previous height on each bounce. what is the approximate height that the ball bounce to the fourth bounce?

Which linear function represents the line given by the point-slope equation y + 1 = –3(x – 5)?

Can you divide 25 into 4 equal groups? explain why or why not.