What is 7x-4x=27,solve for x?

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.

Is there an x intercept in the equation 60*1.15^x

What is the sum of these mixed numbers 4 2/3+ 3 1/9