Me! how do you factor out the coefficient of a variable? ? example: 5c - 15

Iknow its nothing to do with education, but what type of thing should i wrote here? ? : ) its for mcdonald's btw.

Is a square always, sometimes, or never a parallelogram

Define the type of sequence below. 7, 14, 28, 56, 112, a. neither arithmetic nor geometric b. arithmetic c. both arithmetic and geometric d. geometric