Question

WILL GIVE BRAINLIEST write an equation for the nth term of the arithmetic sequence and find the 30th term 28, 25, 22, 19, ... (show your work pls)

Answer 1

Answer: 31 - 3n

Step-by-step explanation:

step one:

25 - 28 = -3

22 - 25 = -3

19 - 22 = -3

d = -3

Step two:

An = a1 + (n-1) d

= 28 + (n-1) -3

= 28 - 3n + 3

= 31 - 3n

a1= 28 d = 3

Answer 2

Answer:

-59

Step-by-step explanation:

formula= a+(n-1) d

where:

a= no. of 1st term

n= no. of term

d= common difference

so,

T(30)=28+(30-1)(-3)

T(30)=28-90+3

T(30)=(-59)