Determine which of the following situations requires the distributive property in order to simplify the expression. select all situations that apply. x(2y) 9(x ∙ y) 9(x + y) (7 ∙ a)(b) (7 - a)(b) (2 ∙ x) ∙ y *(oml me on this it's driving me nuts! )*

9(x ∙ y), the distributive property is not used because (x ∙ y) = xy which means that only one term can be multiplied by the term outside the parenthesis. 

 (7 ∙ a)(b), the distributive property is not used because (7 ∙ a) = 7a which means that only one term can be multiplied by the term outside the parenthesis. 

correct choice is b

step-by-step explanation:

when you calculate the average rate of change of a function, you are finding the slope of the secant line between the two points. for the function the average rate of change from point to point can be calculated as

to find the average rate of change from day 2 to day 10, note that at day 2, 8 houses were sold, so a(2,8) and at day 10, 2 houses were sold, so b(10,2). thus,

113.42

i hope that is right.

step-by-step explanation: