The revenue function for a new tech gadget is R⁡(x)=−0.051⁢x^2+679⁢x The table shows various costs depending on the number of units produced. Units Cost ( $ ) 1,000 930,000 5,000 2,210,000 Write the linear cost function so that x is the number of units produced. What is the larger number of units that need to be sold to break even? Round your answer to the nearest whole number.