Question

The pattern below follows the rule, "starting with a value of 3, every consecutive row has a value that is 2 less than twice the value of the previous row." What is the value of the for the 5th row

Answer 1

Answer: 18

Explanation:

Letting
`T_(n)` denote the value of the nth row,

`T_(1)=3\\\\T_(2)=2(3)-2=4\\\\T_(3)=2(4)-2=6\\\\T_(4)=2(6)-2=10\\\\T_(5)=2(10)-2=\boxed{18}`