Solve the problem.The cost of stainless steel tubing varies jointly as the length and the diameter of the tubing. If a 
length with diameter 2 inches costs $48.00 , how much will a 
length with diameter 
cost?
A. $279.17
B. $278.90
C. $273.60
D. $271.20
Answer: C
Mathematics
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Use the at least once rule to find the indicated probability.An unprepared student makes random guesses on all questions of her multiple choice test. If there are 19 questions and each question has 5 possible answers, what is the probability she will answer at least one question correctly?
A. 0.969 B. 0.004 C. 0.986 D. 0.014
Mathematics
Provide an appropriate response.Evaluate: 
Fill in the blank(s) with the appropriate word(s).
Mathematics
Solve the equation symbolically.
= 
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.If the average cost per unit C to produce x units of plywood is given by 
what is the unit cost for 40 units?
A. -$12.50 B. $16.67 C. $37.50 D. $0.75
Mathematics