8.2+due+2-1

i agree -Brooke Wiggins 10 & 12 Done By Emily Johnson

Lookin' good Emilyyyy! Checked By: Courtney Venable

18. a1=15, d=4 an=15+(n-1)4 an=15+4n-4

an=4n+1
20. a1=0, d=-(2/3) an=0+(n-1)-(2/3) an=-(2/3)n +(2/3)

an= (-2n+2)/3
26. a5=190, a10=115 d=(75/4), a1=265 an=265+(n-1)(75/4)

an=(75n+985)/4
-Heather Henry For number 18 I got an= 4n+11. For number 26 I got that d=-15 so in the end it would be an=280-15n Checked by Meredith Hohl

Done by: Alyssa Johnson

yep I got the same for 40, 42, and 44! good job! checked by Rachel West
 * 40,42,44 done by Jose Castellanos

48. 20, 23, 26, 29, 32, 35, 38, 41, 44, 47 50. 12.8, 13.6, 14.4, 15.2, 16, 16.8, 17.6, 18.4, 19.2, 20

Done by Sam Bennack

54-58

I got the same. Kristen Hanslik
 * 1) 60 and 62 done by Miles Hennington

Aggie Tutia I forget to check last night due to the circumstances and there wasn't any work to check so I've uploaded mine:
 * 64,66,70

72 & 76 Done by Ellen Barth...I think these were the ones I was supposed to do.

I got the same answers. Checked By Alex Dubois

I agree with Cameron! Checked by: Frances Dannenbrink

78 and 83 78. There's 195 logs 83. True, because you can find d, the common difference, and then find whatever n you are looking for, i think. Done by Freddie Jordan I agree with Freddie on 78, but i put false on 83 because only 2 terms might not be able to tell you if there is a common difference.

84. true, if you have the first and last term of an arithmatic sequence then you can use the formula n/2(a1+an) 86. -y, 4y, 9y, 14y, 19y, 24y, 29y, 34y, 39y, 44y Done by Andrew Kim

I agree with 84 and 86 -Daniel Leeper

I found the difference by taking the last term and subtracting the first term. I divided that number by (the number of blanks plus one.) I plugged that number in to the equation. When I did this to C and D, the answer did not come out to work in the sequence. Done by: Morgan Miller

90) a) -7, -4, -1, 2, 5, 8, 11 YES, a subscript n+1 = a subscript n + 3 b) 17, 23, 29, 35, 41, 47, 53, 59 YES, a subscript n +1 = a subscript n + 6 c) 2, 6,, , 162 NOT POSSIBLE d) 4, 7.5, 11, 14.5, 18, 21.5, 25, 28.5 YES, subscript n +1 = a subscript n + 3.5 e) 8, 12, __,__ _,, 60.75 NOT POSSIBLE

To find if these numbers worked in a sequence, I had to find the d or the change in each one of them. The first sequence started with a -7 and ended with an 11 with 5 blanks in between. I took the difference between 11 and -7 and then divided by 6 to get the change to be +3. That is how I got my equation. The second sequence, I went through the same process and found the d to be 6. I continued to add 6 to each of the terms until I got to the last term and checked to see if the sequence worked - it did. The third set was not a sequence because the d between 2 and 6 is 4 and with the blanks in between, there was no way it could get all the way up to 162. The fourth set, I found the difference to be 3.5, and that is how I created that equation. The last set doesn't work because the d is 4 - whole numbers. They was no way the last answer would be 60.75.

I know it's early but the work wasn't put up yet, so I put up mine. Checked by Mady Smith