Which expressions is equal to 4x9. Check all that apply. * 4 x (3 + 6)
(1 + 3) x 9
(2 x 9) + (2 x 9)
(4 x 4) + (4 x 4)

Arefrigeration system at your company uses temperature sensors fixed to read celsius (°c) values, but the system operators in your control room understand only the fahrenheit scale. you have been asked to make a fahrenheit (°f) label for the high temperature alarm, which is set to ring whenever the system temperature rises above –10°c. what fahrenheit value should you write on the label?