Question

Mercury melts at 38
below zero .write this temperature as an integer

Answer 1

the integer is -38 because an integer can not be a fraction or a decimal.. and the problem says that mercury melts at 38 below zero, so, this would be 0-38=-38

Answer 2

"38 below zero" can be displayed as -38.

The negative sign implies that the number is whatever the value is less than the value of 0.

Thus, -38 + 38 = 0.