Question 7 and 8.

An investor has $60,000 to invest in a CD and a mutual fund. The CD yields 5% and the mutual fund yields 7%. The mutual fund requires a minimum investment of $9,000, and the investor requires that at least twice as much should be invested in CDs as in the mutual fund. How much should be invested in CDs and how much in the mutual fund to maximize the return? What is the maximum return? To maximize income, the investor should place $| in CDs and $| in the mutual fund. (Round to the nearest dollar as needed.)A fruit grower can use two types of fertilizer in her orange grove, brand A or brand B. The amounts (in pounds) of nitrogen, phosphoric acid, and chloride in a bag of Pounds per Bag each brand are given in the table. Tests indicate that the grove needs at least 1750 pounds of phosphoric acid and at most 550 pounds of chloride. Answer parts (A) Brand A Brand B 8 and (B) below. Nitrogen 5 Phosphoric Acid Chloride 2 (A) If the grower wants to maximize the amount of nitrogen added to the grove, how many bags of each mix should be used? How much nitrogen will be added? The grower should add bags of brand A and bags of brand B to maximize the amount of nitrogen added