Kiana bought 28 feet of fabric this week. This amount is 4 feet more than twice the amount of fabric she bought last week. Answer the following questions to find the number of feet of fabric Kiana purchased last week. (a) What is the unknown information? (b) Let f represent the unknown information. Write an equation to model the problem. (c) Which number, 10, 11, or 12, will solve the equation in Part (b)? Show your work. (d) How many feet of fabric did Kiana buy last week?