If the pattern below follows the rule "starting with two, every consecutive line has a number that is one less than twice the previous line," how many marbles must be in the sixth line? image is above

Mustafa heloise and gia have written more than a combined total of 22 articles for the school newspaper.heloise has written 1/4 has written articles as mustafá has gia has written 3/2 as many written articles as mustafá has