The temperature, t, in Burrtown starts at 21°F at midnight, when h = 0. For the next few hours, the temperature drops 2 degrees every hour. Which equation represents the temperature, t, at hour h? A. t = 21h + 4 B. t = 4h + 21 C. t = - 4h + 21 D. t = - 21h + 4

There is no correct answer given.

Answer should be t=-2h+21.

Step-by-step explanation:

General format of a linear equation can be given as,

y = mx + c

Where,

y ⇒ dependent variable (in this case temperature t)

m⇒ Gradient (the rate at which the temperature drops)

x⇒ independent variable (hours)

c⇒ intercept (this is the starting temperature)

Now we can substitute the given values to the above format to arrive at the equation,

t=-2h+21

There is no correct answer given.