Complete the series 1.5, 2.3, 3.1, 3.9, whats next

4.7

Each term is 0.8 bigger than the previous one.

1.5, 2.3, 3.1, 3.9

1) 2.3 - 1.5=0.8

2) 1.5+0.8=2.3

2.3+0.8=3.1

3.1+0.8=3.9

Every time we add 0.8, so the next term is

3) 3.9+0.8=4.7

$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