Solve the problem.Ohm's law relates the current in a circuit, I, in amperes, the voltage of the circuit, V, in volts, and the impedance of the circuit, Z, in ohms, by the formula 
Find V, the voltage of a circuit, if 
and Z = (2 + 4i) ohms.
A. (28 + 66i) volts
B. (-32 - 66i) volts
C. (28 - 66i) volts
D. (-32 + 66i) volts
Answer: A
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A manufacturer has been selling 1,200 television sets a week at $400 each. A market survey indicates that for each $30 rebate offered to the buyer, the number of sets sold will increase by 60 per week. Find the demand function.
What will be an ideal response?
Write the algebraic expression without parentheses.-8(-8z)
A. 64z B. 64 - 8z C. -64z D. 64 + z
Solve the problem.For a hyperbolic mirror the two foci are 44 cm apart. The distance of the vertex from one focus is 6 cm and from the other focus is 38 cm. Position a coordinate system with the origin at the center of the hyperbola and with the foci on the y-axis. Find the equation of the hyperbola.
A. 
- 
= 5
B. 
- 
= 5
C. 
- 
= 1
D. 
- 
= 1
Solve by using the quadratic formula.x2 + 18x + 71 = 0
A. 9 ± 
B. -18 + 
C. -9 ± 
D. 9 + 