D deagle145 New member Jan 20, 2009 #1 minute and a different rate for? During peak times, roaming cell phone calls are charged one rate for the first minute and a different rate for each additional minute. If a 7 minute call costs $10, and a 4 minute call costs $6.40, find each rate.
minute and a different rate for? During peak times, roaming cell phone calls are charged one rate for the first minute and a different rate for each additional minute. If a 7 minute call costs $10, and a 4 minute call costs $6.40, find each rate.