Arithmetic Sequence and Series

Write the first 4 terms of $a_n=8n-1$  

• 8,16,24,32

• 9,17,25,33

• 7,15,23,31

• 7,63,511,4095

 $Find\ \ the\ \ first\ \ 4\ \ terms\ for\ \ \ a_n=2\cdot a_{n-1}-4,\ \ if\ \ a_1=7$  

• 7,3,-1,-5

• 0,-4,-8,-12

• 10,6,2,-2

• 7,10,16,28

Write a formula for the general term of the arithmetic sequence 3,11,19, .....

•  $a_n=8n-5$  

•  $a_n=8n+5$  

•  $a_n=8n+11$  

•  $a_n=-8n+11$  

 $Given\ a_n=-7n-4,\ find\ a_{30}.$  

• -206

• -210

• -214

• -218

Find the sum of the first 30 terms of -21+ -17 + -13 + .......

• 2,370

• 2,220

• 1,110

• 1,425

Find the sum of the following: -12 + -9+ -6 +....+333

• 18,618

• 18,297

• 20,010

• 22,018

Find the sum of the odd integers between 12 and 84.

• 3,456

• 1,260

• 2,592

• 1,728

 $What\ \ are\ \ the\ \ first\ \ 3\ \ terms\ \ of\ \ \sum_{n=1}^{20}-3n$  

• -3, -9, -27

• -3, 9, -27

• -3, 6, -9

• -3, -6, -9

 $What\ \ is\ \ the\ \ sum\ \ of\ \ \sum_{n=1}^{20}-3n$  

• -630

• -570

• -1,260

• -1,140