Solve for the unknown in the equation.
= 3
A. R = 17
B. R = 18
C. R = 45
D. R = 12
Answer: C
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Solve the problem.If 81% of scheduled airline flights actually take place, and cancellations are independent events, what is the probability that 3 separate flights will take place?
A. 0.01 B. 0.66 C. 0.81 D. 0.53
Multiply or divide as indicated.
÷ 
A. 
B. 
C. x + 8
D. 
Solve the problem.The amount of particulate matter left in solution during a filtering process is given by the equation 
where n is the number of filtering steps. Find the amounts left for 
and 
(Round to the nearest whole number.)
A. 1000, 63 B. 1000, 31 C. 1000, 16,000 D. 2000, 63
Solve the application. Write an expression to describe the situation and simplify the expression for the final answer.On a mountain climbing expedition, the temperature at the summit of the mountain was -4°F. By the time the climber reached the base of the mountain, the temperature had risen 22°. What was the temperature at the base of the mountain?
A. -4 + 22 = -18; The temperature at the base was -18°F. B. -4 + 22 = 18; The temperature at the base was 18°F. C. -4 + (-22) = -26; The temperature at the base was -26°F. D. -4 + (-22) = 26; The temperature at the base was 26°F.