Answer: 5.an=2+11n 6.an=40-10n 7.-50+5n
Explanation:
You're trying to find formulas for which when you plug in the number of the term into n, you get the value of the term. The general formula is
an=a1+(n-1)d.
All the values are already given to you so you can just substitute and simplify to get the specific formula.