Add or subtract. Write the answer in lowest terms.
+ 
A. 
B. 
C. 
D. 
Answer: B
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Use the empirical probability formula to solve the exercise.The table below represents a random sample of the number of deaths per 100 cases for a certain illness over time. If a person infected with this illness is randomly selected from all infected people, find the probability that the person lives 3-4 years after diagnosis.
A. 
B. 
C. 
D. 
Find the root. Assume that variables represent any real number.
A. 11x
B. -11
C. 11
D. 121x
Solve.The area of a circle varies directly as the square of the radius. What happens to the area if the radius is doubled?
A. The area is halved.
B. The area is multiplied by 
.
C. The area is doubled.
D. The area is multiplied by 4.
Multiply.(4x + 2)(x - 11)
A. x2 - 22x - 42 B. 4x2 - 43x - 22 C. x2 - 42x - 43 D. 4x2 - 42x - 22