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

Step-by-step explanation:

Letting $T_{n}$ denote the value of the nth row,

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