Answer:
50 miles
Explanation:
Step one:
Given data
one-time fee of $50 and after pays $.50 for each additional mile driven
let number of miles be x
let total be y
Expression for first company
y=50+0.5x---------------1
Expression for second company
y=1.5x-------------------------2
Step two:
equate 1 and 2 above
50+0.5x=1.5x
collect like terms
50=1.5x-0.5x
50=x
x=50 miles
Hence a customer must drive at least 50 miles