The sum of 3 times a number and 1 is 17 decreased by the number

Asequence {an} is defined recursively, with a1 = 1, a2 = 2 and, for n > 2, an = an-1 an-2 . find the term a241

The measure of one angle of an octagon is two times smaller that of the other seven angles. what is the measure of each angle?

Identify the expression equivalent to 4(x + x + 7) − 2x + 8 − 4 by substituting x = 1 and x = 2.