What sort math is this called and how do you work it out

Multiply −2x(6x^4−7x^2+x−5) express the answer in standard form. enter your answer in the box.

Closing a credit card usually _your debt ratio.a. increasesb. decreasesc. improvesd. has no effect on

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