A business owner pays $⁢1,200 per month in rent and a total of $⁢120 per hour in employee salaries for each hour the store is open. On average, the store brings in $⁢200 in net sales per hour. Which equations can be solved to determine the break-even point if C times x represents the cost function, R times x represents the revenue function, and x the number of hours per month the store is open?