Answers:
What is the temperature of the oven 14 minutes after being turned on?
70 = initial temp
20 = degrees per minute
70 + 20t = ??
70 + 20(14) = 350
What is the temperature of the oven t minutes after being turned on?
The temperature of the over per minute is represented by the expression 70 + 20t, when t = the minutes after being turned on