Suppose that, for a certain exam, a teacher grades on a curve. It is known that the mean is 50 and the standard deviation is 6. There are 60 students in the class. How many students should receive a C?
?
?
A. 43
B. 35
C. 37
D. 21
E. 41
Answer: E
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Use the mileage chart shown below to find the minimum spanning tree for the 5 cities of Boston, Buffalo, Chicago, Columbus, and Louisville.
Using Kruskal's algorithm which edge is chosen third?
A. Buffalo - Columbus. B. Columbus - Louisville. C. Boston - Buffalo. D. Boston - Chicago. E. none of these
Solve for the unknown in the equation.D + 4 = -18
A. D = 14 B. D = -14 C. D = 22 D. D = -22
Solve the problem.The table below shows a recipe to make 1 or 2 servings of hot chocolate. Servings 
To make 5 servings, how much of each ingredient would you use?
A. hot chocolate = 8
Tbs; water = 7
cups; vanilla = 1
tsp
B. hot chocolate = 7
Tbs; water = 6
cups; vanilla = 2
tsp
C. hot chocolate = 7
Tbs; water = 6
cups; vanilla = 1
tsp
D. hot chocolate = 7
Tbs; water = 7
cups; vanilla = 1
tsp
Provide an appropriate response.The demand function for an appliance company's line of washing machines is 
where p is the price (in dollars) per unit when q units are demanded (per week) by consumers. Find the level of production that will maximize the manufacturer's total revenue, and determine this revenue.
What will be an ideal response?