Find the sum of the first 21 terms of the arithmetic sequence given by the formula an = n + 5 63
273
320
336

1) 2/5

2) zero=0/1

3) zero=0/2

4) -4/5

5) undefined=3/0

the formula of a slope:

we have the points (-2, 7) and (2, 3). substitute:

6x = 48

i hope this . 6 cards each and a total of $48. dvide each side by 6 and you will have your answer.

the answer is 1030 it's very simple math.