If there were 50000 pounds of raw materials on hand on January 1, 140000 pounds are desired for inventory at January 31, and 530000 pounds are required for January production, how many pounds of raw materials should be purchased in January?

Someone knows the answer i need in the exam

You are head of the schwartz family endowment for the arts. you have decided to fund an arts school in the san francisco bay area in perpetuity. every 5 years, you will give the school $ 1 comma 000 comma 000. the first payment will occur 5 years from today. if the interest rate is 5.9 % per year, what is the present value of your gift?

You were able to purchase two tickets to an upcoming concert for $100 apiece when the concert was first announced three months ago. recently, you saw that stubhub was listing similar seats for $225 apiece. what does it cost you to attend the concert?