In a store, a $15 dvd is marked 10% off. what is the discount on the dvd?

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ab=9, and ac=12, find hc.

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?

25 ! the line of best fit is h = 5a + 86. predict the height at age 16.