Add or subtract. Simplify if possible.
+ 
A. 
B. 
C. 
D. 
Answer: D
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Use the product rule to simplify the expression. Assume that the variables can be any real number.
A. 4x
B. 4xy
C. 4xy2
D. 4x2
Solve the problem.From a balloon 886 feet high, the angle of depression to the ranger headquarters is 
How far is the headquarters from a point on the ground directly below the balloon (to the nearest foot)?
A. 320 ft B. 330 ft C. 325 ft D. 315 ft
Follow the rules for working with measurements.Steel weighs 0.28 lb/in 3. What is the weight of a rectangular piece of steel 0.3323 in. by 14 in. by 18 in.?
A. 26 lb B. 23 lb C. 24 lb D. 33 lb E. 280 lb
It is estimated that one third of the general population has blood type A+. If a sample of six people is selected at random, what is the probability that exactly three of them have blood type A+? Round answer to three decimal places, if necessary.
__________ What is the probability that at most three of them have blood type ? Round answer to three decimal places, if necessary. __________