Please help answer this question as soon as possible!

= 10.5 - 3n

Step-by-step explanation:

The explicit rule for an arithmetic sequence is

= a₁ + (n - 1)d

where a₁ is the first term and d the common difference

A recursive formula has the form

= + d ( where d is the common difference )

Given

= - 3 ⇒ d = - 3

Thus explicit rule with a₁ = 7.5 and d = - 3

= 7.5 - 3(n - 1) = 7.5 - 3n + 3 = 10.5 - 3n

my guess would be b and d, but i didn’t actually get out the pen and paper. lol