The sequence a1, a2, … , an, … is such that an=2an−1−x for all positive integers n ≥ 2 and for certain number x. If a5=99 and a3=27, what is the value of x? Choose the correct choice from the following choices.
A) 3 B) 9 C) 18 D) 36 E) 45
a5= 2*a4 - x = 99   a4 = 2*a3 - x = 2*27 - x   therefore;   a5 = 2*(54 - x ) -x = 99   108 - 3*x = 99   therefore X = 3   This the answer is "3"
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The sequence a1, a2, … , an, … is such that an=2an−1−x for all positive integers n ≥ 2 and for certain number x. If a5=99 and a3=27, what is the value of x?