Jonah is looking at some information for the obstacle course he is interested in completing. the x-coordinate is the number of the obstacle, while the y-coordinate is the average time to complete the obstacle, measured in minutes. (1, 7.25), (2, 7.975), (3, 8.7725), (4, 9.64975) jonah use an explicit formula to find the average time he will need for the 9th obstacle.

  (9, 15.5410188725)

Step-by-step explanation:

The explicit formula for a geometric sequence with first term 7.25 and common ratio 1.1 is ...

  y = 7.25·1.1^(x-1)

For x=9, the y-value is ...

  y = 7.25·1.1^8 = 15.5410188725 . . . minutes

Comment on the answer

This time period has a resolution of about 30 nanoseconds, which is completely nonsensical in the context of an obstacle course. It is written in all its decimal glory after the fashion of the numbers given in the problem statement.

$8

step-by-step explanation:

it is pretty much backwards.

you take the 4x2 multiply that, and that is = $8