PLEASE HELP I HAVE A TON OF QUESTIONS AND EVERYTIME I REDO THIS ON THE TEST IT SAYS IM WRONG

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 f(x) = x+8 and g(x) = 4x- 3, find (f+g)(x)

45 was divided by a power of ten to get 4.5. what power of ten was it divided by? people 4.5