D Question 8 5 pts A rectangular box is to have a square base and a volume of 80 ft. If the material for the base costs 15 cents per square foot, material for the top costs 35 cents per square foot, and the material for the sides costs 20 cents per square foot, determine the dimensions of the square base (in feet) that minimize the total cost of materials used in constructing the rectangular box. O 8-by-8 6-by-6 O 2-by-2 4-by-4 O 5-by-5 D Question 9 5 pts How long will it take for $4, 000 to grow to $7, 000 if the investment earns an interest rate of 48%% per year compounded monthly. 12 In(7/4) 1.04 In(4/7) 12 In(1.04) O In(7/4) 12 In(1.04) In(7/4) In (1.04) 12 In(4/7) In (1.04) Il app.honorlock.com is sharing your screen. Stop sharing Hide Calculator Guidelines WK Webcam Mini 1 13