Which statements are true about the function y = x + 2x Choose the THREE statements that are correct.
СА
The graph of the function opens up.
B
The graph of the function opens down.
С
The graph of the function has a vertex at (1,0)
D
The graph of the function has a vertex at (-1,-4)
E
The graph of the function has an axis of symmetry of O
F
The graph of the function has an axis of symmetry of

yes

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,

$4034.40

the perimeter of the field is the sum of the lengths of the four sides:

47 yd + 158 yd + 47 yd + 158 yd = 410 yd

the cost of 3 ft (1 yd) of fence is 3×$3.28 = $9.84.

so the cost of jake's wood perimeter fance is

(410 yd) × ($9.84 /yd) = $4034.40