Why did the lady not get arrested after she shot, drowned, and hanged her family?

Me i’m stuck on all these questions besides the two bottom ones

Pranav and molly are selling pies for a school fundraiser. customers can buy blueberry pies and pumpkin pies. pranav sold 6 blueberry pies and 4 pumpkin pies for a total of $106. molly sold 6 blueberry pies and 3 pumpkin pies for a total of $90. find the cost of each of one blueberry pie and one pumpkin pie

Kate has 50 quarters and dimes. she has a total of $9.80. how many dimes that she have?