You change oil every 6000 miles and drive 2000 miles a month; how many times a year do you change oil?

How can you tell when x and y are not directly proportional?

The angle of depression from the top of the tree to the tip of the shadow is 25°. find the height of the tree to the nearest tenth. a. 16.8 feet b. 18.2 feet c. 23.4 feet d. 39.7 feet

If m is the midpoint of ln and ln=27.8 find the length of mn