xim3na xim3na 04-05-2020 Mathematics contestada You are deciding between two pay-as-you-go cell phone companies. "On Call" charges $12 for 4 hours and "Talk Time" charges $2.25 for every 1/2 hour. What is the unit rate in dollars per hour for On Call? * 1 point $3 $12 $4 $0.25