Mathematics: PLEASE DUE TOMARROW :(

PLEASE DUE TOMARROW :( - id14147061, woahhh17

qaqpuk14

24.08.2021

Number 18: 17 is the answer.

Number 20: 4 is the answer.

Number 22: 81 is the answer.

Number 24: $130 is the amount of money you have.

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dion27

19.03.2021

$a_{n}=(-3n + 7)$ is the answer.

Step-by-step explanation:

Here the recursive rule for an arithmetic sequence is

a1 = 4

$a_{n}=a_{n-1}-3$

Therefore the sequence will be

4, 1, -2, -5........ n terms

For this arithmetic sequence the explicit rule will be

$a_{n}=a_{1}+(n-1)d$

Here n = number of terms

a1 = first term = 4

d = common difference = -3

$a_{n}=4+(n-1)(-3)= 4 - 3(n-1) = 4 - 3n + 3 = (7 - 3n)$

Therefore explicit rule for this sequence is $a_{n}=(-3n + 7)$

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