Casey is deciding which of two landscapers to hire. each landscaper charged an hourly rate plus a fee for each job. casey correctly wrote and solved a system of linear equations by substitution. in his work, he substituted an expression for one variable and thought for the other. this resulted in the equation 5 = 20. what can casey conclude? •one landscaper charges $20 for five hours of work. •one landscapers hourly rate is $15 lower than the other landscapers. •both landscapers charge the same hourly rate and the same fee per job. •both landscapers charge the same hourly rate, but not the same fee per job.