Answer:
a₂ = 35
Explanation:
given the term- to term rule is ' subtract 5 '
this rule allows us to find the next term to the right from the preceding term
to obtain the second term a₂ requires us to go in the reverse direction from the fourth term a₄
this means doing the opposite, that is " add 5 "
a₄ = 25
a₃ = a₄ + 5 = 30
a₂ = a₃ + 5 = 35 ← second term