Answer :
Answer:
nth term = -5n + 30
Step-by-step explanation:
Given sequence:-
25 20 15 10 5
To find the nth term, we have to find the algebraic expression, Xn.
Xn = dn + b
Here, 'd' means the common difference and 'b' means 'first term -- common difference'
the common difference here is -5
So, b = 25 - (-5)
b = 25 + 5
b = 30
Xn = -5n + 30
Therefore, nth term equals -5n + 30