Answer:
71°
Step-by-step explanation:
The temperature had to be at least 71° when the heater quit to be able to lose 4° and still be at least 67° when the heater is repaired.
Question is...how did someone know that the heater had failed?
152
x = - 1
6x - 8 = 8x - 6
6 - 8 = 8x - 6x
2x = - 2
