Which is the correct answer. Quickly help please

Select the correct answer from each drop-down menu. rewrite the formula to find voltage. the formula for electrical power (p, in watts) is where v is the voltage in volts and r is the resistance in ohms. for a particular brand of water heater, r is 32 ohms and p is 0.5 watts. the formula to find v is , and the voltage at which the heater operates is volts.

If angle 2=3x +1 and angle 3=2x +4what is angle 2

The square root of 9x plus 7 plus the square rot of 2x equall to 7