Solve the problem.A mechanic uses an average 
gallon gear lube to service each tractor differential. Find the number of tractors that can be serviced with 16 gallons of gear lube.
A. 20 tractors
B. 12
tractors
C. 4 tractors
D. 64 tractors
Answer: A
Mathematics
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Graph the function f(x) over the given interval. Partition the interval into 4 subintervals of equal length. Then add to your sketch the rectangles associated with the Riemann sum 
, using the indicated point in the kth subinterval for ck.f(x) = cos x + 1, [0, 2?], left-hand endpoint
A. 
B. 
C. 
D. 
Mathematics
Subtract in the indicated base.2315 - 225
A. 1435 B. 2045 C. 1045 D. 2445
Mathematics
Find the LCM for the given numbers by an appropriate method.48, 162, and 9
A. 324 B. 1296 C. 648 D. 432
Mathematics
Simplify.
+ 
+ 
A. 18
B. 
C. 
D. 14
Mathematics