Linear Model of Oven Temperature

Gabriella is modeling how quickly an oven heats up to a target temperature. She sets the oven to 370 degrees. After two minutes, the oven's temperature is 100 degrees. After four minutes, the temperature is 130 degrees, and after six minutes, it is 160 degrees. Based on this data, she models the temperature using the following function, where T represents the temperature and x represents the time in minutes.

T = 15x + 70

According to the model, how long does it take for the oven to reach 370 degrees?