7(2j + 1 + j)
3. you will now use mathematical properties to create two expressions that are equivalent to the expression. make sure you show all steps in your work.

a. use either the commutative property or combine like terms to create an equivalent expression.
b. use the distributive property to create an equivalent expression.
me on this. : )

Someone answer asap for ! the boiling point of water at an elevation of 0 feet is 212 degrees fahrenheit (°f). for every 1,000 feet of increase in elevation, the boiling point of water decreases by about 2°f. which of the following represents this relationship if b is the boiling point of water at an elevation of e thousand feet? a. e = 2b - 212 b. b = 2e - 212 c. e = -2b + 212 d. b = -2e + 212