Answer to Question #157494 in Algebra for Nevaeh Southerland

Question

The graph shows the temperature y in a freezer x minutes after it was turned on. minutes after being turned​ on, the temperature was actually degrees from what the trend line shows. What values could the actual temperature be after the freezer was on for ​minutes? Click the icon to view the graph of the freezer temperature versus time.

Answer 1

by the graph, at X=5 minutes, Y=15$\degree F$ , or five minutes after freezer was turn on.

But it is given that the temperature was actually $3\degree F$ from what the trend line shows, it means that the actual temperature could be 3$\degree F$ more or $3\degree F$ less than the predicted temperature of 15$\degree F$ .

thus,

actual temperature is : 15$\degree F \pm 3\degree F$

so the actual temperature is : 18$\degree F or 12\degree F$