Respuesta :
Answer:
Option b
Step-by-step explanation:
Given that Lisa wants to buy a phone card for $5.
Company X charges $0.37 for the first minute and $0.08 for each additional minute.
ie. for t minutes charges are [tex]C(t) = 0.37+0.08(t-1)[/tex]
Company Y charges $0.52 for the first minute and $0.14 for each additional minute.
for t minutes company Y charges
[tex]C(t) = 0.52+0.14(t-1)[/tex]
If 5 dollar is spent, then for company A
t = [tex]\frac{5-0.37}{0.08}+1 =58.875[/tex] minutes
For company B, for same 5 dollars,
t =[tex]\frac{5-0.52}{0.14} =33[/tex]
Company x gives about 26 minutes more
Option b
