The 1st term of a linear sequence is 17 The 5th term of the sequence is 29
What is the 9th term of the sequence?

Find out the 9th term of this sequence when the 1st term is 17 and the 5th term is 29.

How to do this , and can some one explain

Abag contains 4 red, 7 blue and 5 yellow marbles. event a is defined as drawing a yellow marble on the first draw and event b is defined as drawing a blue marble on the second draw. if two marbles are drawn from the bag, one after the other and not replaced, what is p(b|a) expressed in simplest form? a. 7/16 b. 7/15 c. 14/16 d. 14/15

If the value of cos330°is√3/2 then find cos 165°.