Solve the problem.The demand for a specialized oil-drilling engine is given by the demand function D(x) = 
where x is the number of units produced each day and D(x) is the number sold each day. Assume that x is an integer. What is the daily demand for this item (units sold each day) if 15 units are produced each day? Round to the nearest integer.
A. 67 units per day
B. 28 units per day
C. 48 units per day
D. 63 units per day
Answer: C
Mathematics
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Use the shell method to find the volume of the solid generated by revolving the region bounded by the given curves and lines about the x-axis.x = 9y2, x = 9
A. 
?
B. 
?
C. 3?
D. 
?
Mathematics
Solve the problem.A rectangular pool 3.1 m by 6.3 m is surrounded by a 1.7 m wide sidewalk. Find the area of the sidewalk.
A. 21.76 m2 B. 43.52 m2 C. 19.53 m2 D. 32.4 m2
Mathematics
Express as a sum of logarithms.logr 8T
A. log 8 + log T B. log7 r + logT r C. logr 8 + logr T D. logr 8 + logr T + logr r
Mathematics
Simplify the expression. Assume that all variables represent positive real numbers.155/8 ? 15-1/8
A. 151/2
B. 
C. 225
D. 159/8
Mathematics