Answer:
a1= 1, a2=2, a3= 3
common difference
d=5-2=3
d=2-(-1)=2+1=3
d= 3
3.50$ x 5.5 = 19.25 $
Step-by-step explanation:
a
go it right on a mastery test
24-(-18)/(-6)
= 24 - 3
= 21
