A scale used in an experiment assigns a value of "1" to subjects with black hair, and a value of "2" to subjects with blond hair. The type of scale used in this experiment is:

Mustafa contributes 11% of his $67,200 annual salary to his 401k plan. what is his pretax income

Luke started a weight-loss program. the first week, he lost x pounds. the second week, he lost pounds less than times the pounds he lost the first week. the third week, he lost 1 pound more than of the pounds he lost the first week. liam started a weight-loss program when luke did. the first week, he lost 1 pound less than times the pounds luke lost the first week. the second week, he lost 4 pounds less than times the pounds luke lost the first week. the third week, he lost pound more than times the pounds luke lost the first week.

Write the standard form of an equation with (see picture below)