Evaluate f(-7). f(x)=3x^2

a) -441
b) -147
c) 78
d) 147

Mary had at least an 80% on her test write an inequality to represent this situation

Anyone know? will mark brainliest if correct

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