MATH SMARTIES I WILL GIVE BRAINLIEST AND CAN YOU EXPLAINE WHY YOU THINK ITS THAT ANSWER (SHOW WORK) SO I CAN UNDERSTAND THANK YOU

Solve for x -2.3(r - 1.2 ) = -9.66 enter you answer as decimal.

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

When 142 is added to a number the result is 64 more times the number my options are 35 37 39 41