Solve the problem.The diameter of a tree was 8 in. During the following year, the circumference increased 
About how much did the tree's diameter increase? (Leave your answer in terms of ?.)
A. 
in.
B. 
in.
C. 
in.
D. 
in.
Answer: D
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Evaluate the line integral along the curve C.
ds , C is the path given by:C1: r(t) = (4 cos t)i + (4 sin t)j from (4, 0, 0) to (0, 4, 0)C2: r(t) = (4 sin t)j + (4 cos t)k from (0, 4, 0) to (0, 0, 4)C3: r(t) = (4 sin t)i + (4 cos t)k from (0, 0, 4) to (4, 0, 0)
A. 0
B. 
C. - 
?
D. 
?
Solve the problem.A sofa sells for $758. If the sales tax rate is 6.7%, what is the total price?
A. $808.79 B. $1265.86 C. $50.79 D. $507.86
Solve the problem.A box contains 28 widgets, 4 of which are defective. If 4 are sold at random, find the probability that (a) all are defective (b) none are defective.
A. 
; 
B. 
; 
C. 
; 
D. 
; 
Solve the inequality. Graph the solution set, and state the solution set in interval notation.|x - 7| + 8 ? 13
A. [2, 13]
B. (2, 12)
C. [2, 12]
D. ?