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3-19.

The temperature in San Antonio, Texas is currently $77°$F and is increasing by $3°$ per hour. The current temperature in Bombay, India is $92°$F and the temperature is dropping by $2°$ per hour. When will it be as hot in San Antonio as it is in Bombay? What will the temperature be? Homework Help ✎

Write two equations that express the temperature of 1) San Antonio and 2) Bombay in terms of the time (in hours) when these cities will have the same temperature as one another.

San Antonio: $t = 77+3h$    where $t$ = temperature (F°)
Bombay: $t = 92-2h$    where $h$ = time (hours)

The temperatures are the same when $77+3h = 92-2h$.