Answer
$a_{n}$ = 3 - $\frac{n}{2}$ = formula for nth term
10th term: -2.
Work Step by Step
Use the formula $a_{n}$ = a + d(n-1) and plug in the given values to find a formula for the nth term.
For the 10th term, plug in 10 for n and solve: $a_{10} =3 - \frac{n}{2}= 3 - \frac{10}{2}=3-5=-2$.
