Use the first 5 terms of each sequence to state if the sequence is arithmetic, geometric, or neither. Next, define the sequence recursively using function notation.
1. A: 30, 40, 50, 60, 70, ...
2. B: 80, 40, 20, 10, 5, 2.5,
3. C: 1, 2, 4, 8, 16, 32, ...
4. D: 1,172, %, 1/16,
5. E: 20, 13, 6, -1, -8,...
6. F: 1, 3, 7, 15, 31, . .

$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

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= 5

step-by-step explanation:

to find the 15th term substitute n = 15 into the nth term formula

= (- 3 × 15 ) + 50 = - 45 + 50 = 5