Evaluate
29 + 1/7x when × = -1/2

Adriano loves anime and collects toys from his favorite series. each month he gains 4 toys. if adriano has 3 toys when he starts collecting, how many does he have after 4 months

Nell has a sales clerk job that pays $12 per hour for regular gas work hours. she gets double time for any hours over 40 that she works in a week. how many hours did nell work if her weekly pay was $744

How to do this , and can some one explain