Which is an example of the associative property?
a. 11 + (-14 + 5) = (11 + (-14)) + 5
b. -(22 + 1) = -22 + (-1)
c. 16 + (-16) = 0
d. -8 + (-13) = -13 + (-8)

Haley buys 9 pounds of apples for $3. how many pounds of apples can she buy for $1?

Match the scale and the actual area to the area of the corresponding scale drawing. scale: 1 inch to 4 feet actual area: 128 square feet scale: 1 inch to 7 feet actual area: 147 square feet scale: 1 inch to 8 feet actual area: 256 square feet scale: 1 inch to 5 feet actual area: 225 square feet area of scale drawing scale and actual area scale drawing area: 3 square inches arrowright scale drawing area: 8 square inches arrowright scale drawing area: 4 square inches arrowright scale drawing area: 9 square inches arrowright

From the top of a tree a bird looks down on a field mouse at an angle of depression of 50°. if the field mouse is 40 meters from the base of the tree, find the vertical distance from the ground to the bird's eyes.