For the given slope of line l1, (a) find the slope of line a l2 parallel to l1, and (b) find the slope of a line l3 perpendicular to l1.m = 10
A. (a) 10; (b) - 
B. (a) 10; (b) 
C. (a) -10; (b) 10
D. (a) 
; (b) 10
Answer: A
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Decide if the given equation is a solution of the given differential equation.x + y = xy', y = x ln x + cx
A. No B. Yes
Use the map to find the shortest route between the given locations.A to H 
A. 43 miles B. 60 miles C. 46 miles D. 61 miles
Solve the system by the substitution method.
A. (
, -
)
B. (
, 
)
C. (
, 
), (-
, -
)
D. (
, -
), (-
, 
)
Solve the problem.Dmitri needs 6 liters of a 14% solution of sulfuric acid for a research project in molecular biology. He has two supplies of sulfuric acid solution: one is an unlimited supply of the 18% solution and the other an unlimited supply of the 12% solution. How many liters of each solution should Dmitri use?
A. 1.5 L of 18% solution; 4.5 L of 12% solution B. 2 L of 18% solution; 4 L of 12% solution C. 4 L of 18% solution; 2 L of 12% solution D. 2.5 L of 18% solution; 3.5 L of 12% solution