An Aibo costs $2,899.99. This includes a toy ball, a charging station, and several years of AI cloud service, which helps it learn. For how long is that service free? How do you know?

See Below

Step-by-step explanation:

The attached graph shows the cumulative costs of owning an AIBO.

$2899.99 (about $2900) includes fixed cost of Toy Ball, Charging Station

Several years of AI cloud service is a variable cost because this is changing and it helps the robot dog "learn". It is going to cost after some time. But how long?

Looking at the cost of an AIBO, we see that until 3 years, the cost line is veyr close to 3000 dollars, we can say 2899.99 dollars. After 3 years, the cost rises with a slope. Now, this is the cost of AI cloud service being IMPOSED after first 3 years of being "free".

Thus,

We can say that service is free for first 3 years. We know by looking at the graph shown.

-6 is the correct option from the above given options

$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