Solve the radical equation. Check all proposed solutions.
= y + 1
A. y = - 
B. y = 5
C. y = -5
D. y = 6
Answer: B
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Solve the problem.A tank initially contains 140 gal of brine in which 40 lb of salt are dissolved. A brine containing 1 lb/gal of salt runs into the tank at the rate of 6 gal/min. The mixture is kept uniform by stirring and flows out of the tank at the rate of 10 gal/min. Write, in standard form, the differential equation that models the mixing process.
A. 
= 6 - 
y
B. 
+ 
y = 10
C. 
+ 
y = 6
D. 
+ 
y = 6
Determine whether the vectors 
and 
are equivalent.A(-6, -6), B(3, -9), C(9, 7), and D(6, 4)
A. Not equivalent B. Equivalent
Solve the problem.The area of a rectangle is 20m2 - 10m - 30. Find the length if the width is 4m - 6.
A. 5m - 5 B. 20m + 5 C. 20m - 5 D. 5m + 5
Sketch the surface z = f(x,y).f(x, y) = - 
A. 
B. 
C. 
D. 