Ohm's law relates the voltage of the circuit, the current in a circuit, and the impedance of the circuit by V = IZ, where V is the voltage, in volts, I is the current, in amps, and Z is the impedance, in ohms. If the current in a circuit is 4 + 3i amps and the impedance is 2 - i ohms, find the voltage.

-13

step-by-step explanation:

f(x)=2x-5 for f(-4)

f(-4)   means let x=-4

f(-4) = 2(-4) -5

f(-4) =-8-5

      = -13

answer: domain and range mean all possible values of x and y that could be substituted to the inequality. a solution means all possible values that make the inequality statement true. so while the range is still all real numbers, the solution is the shaded area, for which y will always be greater than the line of the function.