Write a system of equations to describe the situation below, solve using any method, and fill
in the blanks
kaya and vivian are comparing the international calling plans on their cell phones. on her
plan, kaya pays $2 just to place a call and $4 for each minute. when vivian makes an
international call, she pays $4 to place the call and $2 for each minute. a call of a certain
duration would cost exactly the same under both plans. what is the cost? what is the
duration?