63 x 38 = 2394
63 x 10 = 630
600 x 3 = 1800
30 x 3 = 90
1800 + 90 = 1890
63 x 2 = 126
630 - 126 = 504
1890 + 504 = 2394
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?
Answer:
x<-5
Step-by-step explanation:
-0.4x>0.8+1.2
-0.4x>2
x<-5
Y = mx + b, m = 0. The equation becomes y = b, where b is the y-coordinate of the y-intercept.
