First term, a
1
=4
Second term, a
2
=8
Common difference, d=a
2
=a
1
d=8−4=4
∴ The common difference is 4
Answer:
21+3x
Step-by-step explanation:
Expand this:
3(7+x)
So it becomes:
21+3x
The average is approximately 3 inches an hour
Answer:
36.909m
Step-by-step explanation:
6.339+0.170+30.4
=36.909m