The number of cells in a tumor doubles every 4.5 months. If the tumor begins with a single cell, how many cells will there be after 3 years? after 6 years?

Solve the equation for b: a= (1/2)(b)(h)

F. a fair coin is thrown in the air four times. if the coin lands with the head up on the first three tosses, what is the probability that the coin will land with the head up on the fourth toss? a. 0 b. 1/16 c. 1/8 d. 1/2

The angle of elevation from point a to the top of the cliff is 38 degrees. if point a is 80 feet from the base of the cliff , how high is the cliff ?