Find the weighted mean. Round to the nearest tenth.
A. 7.2
B. 23.6
C. 26.0
D. 22.3
Answer: B
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Solve the problem.Janice is running a 9753 meter race. Assume that she runs at a constant speed of 308 meters per minute. Express the function f(t) that gives her distance from the finishing line t minutes after the start of the race.
A. f(t) = 9753 + 308t
B. f(t) = 308t
C. f(t) = 9753 - 
D. f(t) = 9753 - 308t
Solve the problem.In a sample of 85 widgets, 4 were defective. How many defective widgets would you expect in a sample of 425 widgets?
A. 20 widgets B. 23 widgets C. 18 widgets D. 46 widgets
Solve for x.
? x = 
A. x = 
B. x = 11
C. x = 
D. x = 
Solve the problem.An organization determines that the cost per person of chartering a bus is given by the formula 
where x is the number of people in the group and C(x) is in dollars. Find the inverse function.
A. C-1(x) = 
B. C-1(x) = 
C. C-1(x) = 
D. C-1(x) = 