Solve x2 - 4 = 77. O x= V73 or X=- 73
O x = 9 or x = -9
0 x = 11 or x = -7
O x = 9i or x = -91

Sorry guys but as you have a small brain

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

Li buys supplies so he can make and sell key chains. he begins to make a profit only after he sells 4 key chains. what point on the graph makes the most sense in this situation?