identify the common difference of the arithmetic sequence -10, -9.5, -9, ...

Note: your answer could be fraction or decimal form.

(a)  

Find the fifth term of the arithmetic sequence 2, 5, 8,...

(a)  

Find  $a_{18}$  of the arithmetic sequence 0, 20, 40, 60,...

(a)  

Find the 22nd term of the arithmetic sequence 6, 18, 30, 42, ...

(a)  

Find  $a_{18}$   if the arithmetic sequence has fourth term 27 and seventh term 51.  

(a)  

Find the tenth term of the arithmetic sequence if the sequence has $a_4=81\ and\ a_7=42.$  

(a)  

The last term of the sequence 1, 10, 19, 28, 37,... is 154. How many terms are in the arithmetic sequence?

(a)  

How many terms are in the arithmetic sequence with  $a_1=345,\ d=-16\ and\ a_n=57$ ?

(a)