Respuesta :

Answer:

3 miles

Step-by-step explanation:

y(x) = total minutes

y = total miles

x = the time in minutes it take erica to run a mile

4x = 56

x = 56/4

x = 14

so it takes her 14 minutes to run one mile

plug 14 into x

y(14) = 42

42/14 = 3 miles