Question

A heating thermostat with a 2-degree differential will keep the temperature within 2ºF of the temperature set point. Suppose your home has a thermostat with a 3-degree differential. If you set the thermostat at 68ºF, select the range of temperatures inside the house.

Answer 1

This means the temperature will be between 68 - 3 and 68 + 3

Answer 2

"within" means it can go below or above that point

Answer 3

so how would you type the answer down?

Answer 4

Well the range will be the values between (68 - 3) and (68 + 3) (calculate those values)

Answer 5

65 and 22

Answer 6

I hope the 22 is a typo.. :)

Answer 7

23??

Answer 8

71

Answer 9

68 + 3... if you are adding somthing to 68, it must be at least greater than 68

Answer 10

yes =]

Answer 11

what signs would you use

Answer 12

WHat do you mean by what signs to use?

Answer 13

65<x<71
or whatt

Answer 14

ah, well since the 65 and 71 are included, you should put:
\[65 \le x \le 71 \]

Answer 15

makes more sense thankn you!!!

Answer 16

yw!