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masha68 [24]
3 years ago
14

The temperature, t, in Burrtown starts at 21°F at midnight, when h = 0. For the next few hours, the temperature drops 4 degrees

every hour.
Which equation represents the temperature, t, at hour h?

A. t = 4h + 21
B. t = –21h + 4
C. t = 21h + 4
D. t = –4h + 21
Mathematics
2 answers:
sweet-ann [11.9K]3 years ago
6 0
In this case the temperature depends on the hour.  So temperature is your X and hour is your Y variable.  When h=0, x=0.   So the 21*C is you x=0 or y-int point.  

If we are trying to match the equation for a line of y=mx+b, 21*C=b.  

Our rate of change is -4*C/h, which is our m variable.

So y=(-4)x+(21)

OR in this case, t=-4h+21.

Answer D.
Luden [163]3 years ago
6 0

Answer: Letter D



Step-by-step explanation:


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