Answer:
a_n = 2.2 + 0.6 n
a_50 = 32.2
Step-by-step explanation:
What's the common difference of this series?


Common difference =
.
Expression for the nth term:

n = 50 for the fiftieth term. Therefore
.
Answer:
D
Step-by-step explanation:
7 is it because it is positive
Answer:
5(x−1)(x+4)? i think
Step-by-step explanation:
The coefficient would be c I believe I may be wrong