NEED HELP ASAP DUE BY 4

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?

The function show two sisters' savings account and the rate at which they plan to deposit money

Acompany manufactures three types of cabinets. it makes 110 cabinets each week. in the first week, the sum of the number of type-1 cabinets and twice the number of type-2 cabinets produced was 10 more than the number of type-3 cabinets produced. the next week, the number of type-1 cabinets produced was three times more than in the first week, no type-2 cabinets were produced, and the number of type-3 cabinets produced was the same as in the previous week.