Answer:
an =a1+(n−1)d
Step-by-step explanation:
D= {-6,-5,-4,-3,-2,-1,0,1,2,3,4,5,6}
R={-6,-5,-4,-3,-2,-1,1,2,5)
E
Perimeter =5s+5s+2s+2s+0.75+0.75
2 off each implies part E
