Which equation can be used to find 40 percent of 25?
100x4 400
40x4 = 16
40x4
160
25x4 - 100
40-4 10
100-4 - 25

The graph below shows the amount of money left in the school’s desk fund, f, after d desks have been purchased. for each new desk that is purchased, by how much does the amount of money left in the school’s desk fund decrease?

2y= 3 2 x−2 y = − 1 3 x + 1 y=− 3 1 x+1

Aman is 6 feet 3 inches tall. the top of his shadow touches a fire hydrant that is 13 feet 6 inches away. what is the angle of elevation from the base of the fire hydrant to the top of the man's head?