A business owner is trying to determine the break-even point. The owner uses the revenue function R⁡(x)=−0.0052⁢x^2+640⁢x The table represents the cost of producing various numbers of units. Units Cost ( $ ) 20,000 8,335,000 50,000 20,575,000 Write a linear cost function where x is the number of units sold. Use it to find the larger number of units the company can sell to break even. Round your answer to the nearest thousand if necessary.