HELP ME HERE! IM GETTING ANNOYED BY THIS QUESTION

Calculate the missing value. round the answer to on decimal place. start with 70, increase it by 21%, and end up with

If 30 lb of rice and 30 lb of potatoes cost ? $27.60? , and 20 lb of rice and 12 lb of potatoes cost ? $15.04? , how much will 10 lb of rice and 50 lb of potatoes? cost?

Using the information in the customer order, determine the length and width of the garden. enter the dimensions. length: feet width: feet