What does the word "baking" means and of which language, this word belongs to?

The administrator of a large assisted living facility wanted to know the average age of the residents living at the facility. he randomly selected 12 residents and determined their age, listed here: 80, 65, 75, 83, 68, 73, 88, 79, 94, 72, 79, 68 what's the average age of the sample of residents? a. 79 years old b. 68 years old c. 75 years old d. 77 years old

Sum is 17 and their difference is 3

Determine which expressions represent real numbers and which expressions represent complex number. asaaap! plis!