Cho hàm số 2 2 3 1 2 ( ) 1
x m x m
y
x
− + + − +
=
−
. Tìm tất cả các giá trị của tham số m m để hàm số
nghịch biên trên mỗi khoảng xác định.

  or  

step-by-step explanation:

if the four friends split the cost, p, of the pizza evenly, then each friend pays one-fourth of the cost of the pizza.

the expression is   or  

7.3

step-by-step explanation:

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,