Identify the property used in the first four steps to solve this equation.

(all the steps provide the same answer choices)

This is a map of the mars exploration rover opportunity predicted landing site on mars. the scale is 1cm : 9.4km. what are the approximate measures of the actual length and width of the ellipse? i mostly need to know how to set it up : )

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?

The population of a bacteria colony grows by a consistent percentage each hour and can be modeled by the function y = 500(1.16)t. what does the value 500 represent in the function?