Solve the problem.The current I in a circuit containing a resistance R and an inductance L is found from the expression I = 
.Find the expression for the instantaneous rate of change of current with respect to R, assuming that the other quantities remain constant.
A. 
= - 
B. 
= 
C. 
= - 
D. 
= - 
Answer: D
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Write the equation of the line with the given slope and y-intercept.m = -2, b = 3
A. y = 2x - 3 B. y = -3x + 2 C. y = -2x + 3 D. y = 3x - 2
Write equations of the horizontal and the vertical lines that pass through the given point.(7, -9.44)
A. horizontal: y = 9.44; vertical: x = -7 B. horizontal: y = -9.44x; vertical: x = 7y C. horizontal: y = -7; vertical: x = 9.44 D. horizontal: y = -9.44; vertical: x = 7
Solve the problem.If f varies jointly as q2 and h, and 
when 
and 
, find f when 
and 
.
A. 192 B. 32 C. 12 D. 48
Solve.The roof of a building is in the shape of the hyperbola 
where x and y are in meters. Determine the distance, w, between the outside walls.A = 11 m
A. 79 m B. 8.9 m C. 17.8 m D. 12.8 m