To find: The temperature is the thermostat set during daytime hours and overnight.
(a)
Expert Solution
Answer to Problem 85AYU
Temperature at daytime T=72∘F
Temperature at overnight T=65∘F
Explanation of Solution
Given: Energy conservation experts estimate that homeowners can save 5% to 10% on winter heating bills by programming their 5 to 10 degrees. The graph shown below.
During daytime at t=12 .
Temperature T=72∘F
At overnight t=24
Temperature T=65∘F
(b)
To determine
To explain: The change in temperature if y=T(t)−2 .
(b)
Expert Solution
Explanation of Solution
Given: Energy conservation experts estimate that homeowners can save 5% to 10% on winter heating bills by programming their 5 to 10 degrees. The graph shown below.
The given graph is T(t) .
If graph shift 2 unit down then T(t)−2 .
So, y=T(t)−2 shift 2 unit down or reduce the temperature for each hours by 2∘F .
(c)
To determine
To explain: The change in temperature if y=T(t+1) .
(c)
Expert Solution
Explanation of Solution
Given: Energy conservation experts estimate that homeowners can save 5% to 10% on winter heating bills by programming their 5 to 10 degrees. The graph shown below.
The given graph is T(t) .
If graph shift 1 unit left then T(t+1) .
Horizontal axis represents time.
So, y=T(t+1) shift 1 unit left or attain previous temperature 1 hour before.
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