Question

Brainliest for free pls

Answer 1

Answer: $t_{n}$ = 0.45$(5)^{n-1}$    (b)

Step-by-step explanation:

$a_{n}$ = 5$a_{n-1}$

if n = 1 , the sequence becomes :

$a_{1}$ = 5$a_{0}$

And it was given that the first term is 0.45 , therefore $a_{0}$ = 0.45 , then:

$a_{1}$ = 5(0.45) = 2.25

$a_{2}$ = 5 (5)(0.45) = 11.25

$a_{3}$ = 5(11.25)  = 56.25

Therefore, the common ratio will be 11.25/2.25 = 56.25/11.25 = 5

Recall the formula for nth term of a geometric sequence , which is given as

$t_{n}$ = a$r^{n-1}$

Substituting the value of a and r , we have

$t_{n}$ = 0.45$(5)^{n-1}$ which is the nth term

Answer 2

Answer:

dont trust me but

Step-by-step explanation:

I think it tis d or b but mostly d