Express the rational expression in lowest terms.
A. 
B. 
C. 
D. 
Answer: C
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Add. Write your answer in lowest terms.
+ 
+ 
A. 
B. 
C. 
D. 
Graph the function.f(x) = log5(x - 2)
A. 
B. 
C. 
D. 
Solve the problem.If a, b, and c are all nonzero, then determine if the plane ax + by + cz = 1 always intersects all three coordinate planes (i.e. the planes x = 0, y = 0, z = 0), sometimes intersects them, or never intersects them.
A. Never B. Always C. Sometimes
Solve the problem.A tank initially contains 120 gal of brine in which 60 lb of salt are dissolved. A brine containing 3 lb/gal of salt runs into the tank at the rate of 9 gal/min. The mixture is kept uniform by stirring and flows out of the tank at the rate of 7 gal/min. Write, in standard form, the differential equation that models the mixing process.
A. 
+ 
y = 27
B. 
= 27 - 
y
C. 
+ 
y = 21
D. 
+ 
y = 27