Find the sum of the arithmetic sequence.
-{3n + 7}, n = 48
A) 3864
B) 4032
C) 4200
D) 3792

Question

Quizplus · Accepted Answer

The sum of the first n terms of an arithmetic sequence is given by the formula:S = n/2 * (2a + (n-1)d)where a is the first term, d is the common difference, and n is the number of terms.In this case, a = 3(4) + 7 = 19, d = 3, and n = 48.So, the sum of the first 48 terms of the sequence is:S = 48/2 * (2(19) + (48-1)3)= 24 * (38 + 141)= 24 * 179= 4296Therefore, the correct answer is A) 3864.

Find the Sum of the Arithmetic Sequence