Marcus and lauren each manage an ice cream parlor that is open during the summer.
marcus pays a one-time rental fee of $400 and earns an average of $300 per day from ice cream sales.
lauren pays a one-time rental fee of $300 and earns an average of $250 per day from ice cream sales.
how many days would it take marcus and lauren to earn the same amount of profit?
create an equation to model this equation where x represents the number of days. then, complete the sentence below by solving for x.