Find the 81st term of the arithmetic sequence -28,-34,-40

Answer

sequence -28,-34,-40

1st term = -28

comman difference = -34 - (-28) = -6

comman term = a + (n-1)d

a= first term

d= difference

comman term = a + (n-1)d

                       = -28 + (n-1)(-6)

                       = -28 -6n +6

                       = -22-6n

1st term --> n =1 = -22 -6.1 =  -22 -6 =-28

2nd term --> n =2 = -22 -6.2 =  -22 -12 =-34

81st term --> n =81 = -22 -6.81 =  -22 -486 = -508

Step-by-step explanation:

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