Solve the problem.Given that P(A) = 0.46, P(A ? B) = 0.7, and P(A ? B) = 0.18, find P(B).
A. 0.6
B. 0.24
C. 0.42
D. 0.28
Answer: C
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Solve the problem.Find the equation for the tangent plane to the surface 
at the point 
A. x + y + z = 0 B. z = 0 C. x + y = 0 D. x - y = 0
Solve the problem.A summer camp wants to hire counselors and aides to fill its staffing needs at minimum cost. The average monthly salary of a counselor is $2400 and the average monthly salary of an aide is $1100. The camp can accommodate up to 35 staff members and needs at least 20 to run properly. They must have at least 10 aides, and may have up to 3 aides for every 2 counselors. How many counselors and how many aides should the camp hire to minimize cost?
A. 8 counselors and 12 aides B. 13 counselors and 16 aides C. 19 counselors and 23 aides D. 13 counselors and 17 aides
Solve the problem.Two cars leave an intersection. One car travels north; the other east. When the car traveling north had gone 9 mi, the distance between the cars was 3 mi more than the distance traveled by the car heading east. How far had the east bound car traveled?
A. 9 mi B. 18 mi C. 15 mi D. 12 mi
Solve the equation. Use the change of base formula to approximate an exact answer to the nearest hundredth when appropriate.2x = 128
A. x = log2128 B. x = 64 C. x = log 128 D. x = log 64