The explicit formula for a sequence is
an=12−5(n−1)
What is the 30th term of the sequence?

Step-by-step explanation:

hello :

the nth term of an arithmetic sequence is :

an =a1+(n-1)d   a common difference is : d    and the first term is a1

in this exercice : an=12−5(n−1)    a1 = 12 and  d= -5

a30 =  12-5(30-1) =12-5×29 = 12-145 = - 133

1. d.90

2. e. none of these (80)

3. a. 0

4. b. 6

5. e. none of these (10)

6. a. 5