To be eligible for further consideration, applicants for certain Civil Service positions must first pass a written qualifying examination on which a score of 70 or more must be obtained. In a recent examination it was found that the scores were normally distributed with a mean of 67 points and a standard deviation of 6 points. Determine the percentage of applicants who passed the written qualifying examination.
a. 18.79% applicants passed the written qualifying examination.
b. 19.52% applicants passed the written qualifying examination.
c. 24.74% applicants passed the written qualifying examination.
d. 30.85% applicants passed the written qualifying examination
d. 30.85% applicants passed the written qualifying examination
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Solve the problem.The cost to rent a power-wash machine from the hardware store depends on the number of hours the machine is rented. The ordered pair 
indicates that it costs $52 to rent the machine for 2 hours, and the ordered pair 
indicates that it costs $208 to rent it for 8 hours.a) Write a linear equation giving the cost, y, in terms of the number of hours x.b) Use the equation found in part a to find how much it costs to rent for 11 hours.c) How many hours could you rent for a cost of $598?
A. y = 25x; $275; 22 hours B. y = 26x; $286; 23 hours C. y = 28x; $308; 23 hours D. y = 27x; $297; 24 hours
Find the second derivative.s = 
+ 7
A. 14t + 7 B. 7t C. 14t D. 7t2
Find the perimeter of the polygon.
A. 19 cm B. 24 cm C. 25 cm D. 23 cm
Classify the angle as acute, obtuse, straight, or right.
A. Obtuse B. Right C. Acute D. Straight