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test pid
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The relationship between the number of months and cumulative cell phone cost is represented by the scatter plot shown.
Cumulative Cost
1
600
(10, 504)
(9, 470)
500
(8,418).
400+
Cumulative Cell Phone Cost (dollars)
300-
• (7, 361)
(6, 324).
.(5, 253)
(3,162) •(4, 196)
200+
100(1,55) (2, 108)
0
8 10
Number of Months
A line of best fit for this data is C = 51m + 4.4, where is the cumulative cell phone cost and m is the number of months.
Using this data, which value is the best prediction of the cumulative cell phone cost after 18 months?
O A $918
O B. $923
O C. $940
OD. $990

12/11c

or

12

c

11

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,

in if you ask questions, the points are taken from your total and given to the one who answered it..

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