
=

Multiply both sides by 15
6 =

Multiply both sides by c
6c = 30 Divide both sides by 6
c = 5
The 82nd term for the sequence would be -4
Answer:
14 cm^2
Step-by-step explanation:
You find the area of both triangles, and subtract by 4
6x3x1/2x2 - 2x2
18 - 4
14