What will happen to the demand curve if government regulations require that all households have at least 2 carbon monoxide alarms instead of just one?

Should i run away or get a boyfriend and be loved again

This pie chart shows a sample weekly budget. in this budget, how much money is going toward optional expenses? $70 $75 $10 $35

Jason is looking for an engagement ring to offer his girlfriend. he has found a similar ring at each of four different jewelry stores. he doesn't have enough money to pay for the ring in cash, so he is planning on opening a line of credit (credit card) at the store he ends up buying the ring from. the chart below outlines the difference in the price of the rings the different stores offer as well as the difference in credit options. jason plans to pay off the ring purchase in 36 months. according to the information in the table, which of the jewelry stores will have the cheapest ring in the end?