Suppose you have a choice of working full-time during the summer or going to summer school full-time. Summer tuition and books cost $2,200. If you worked, you could earn $7,000. Your rent for the summer is $1,000 irrespective of your choice. If these are the only relevant costs to consider, the opportunity cost of going to summer school is:

Dr. sperry, a biologist, is using excel to track growth rates of different populations of bacteria. she has a very complex formula in one cell. it begins with “round”. dr. sperry would like to see exactly how excel’s calculation reached the final rounded value that she sees in the cell. what could dr. sperry do to best understand how the calculation was made? try different formulas on her own until she reaches the value shown in excel click on the evaluate formula button in the formulas tab and then click “step in” select the cell and then look at the formula in the formula field of the ribbon remove “round” from the formula in order to see the actual value before rounding

The demand curve determines equilibrium price in a market. is a graphical representation of the relationship between price and quantity demanded. depicts the relationship between production costs and output. is a graphical representation of the relationship between price and quantity supplied.

Xinhong company is considering replacing one of its manufacturing machines. the machine has a book value of $39,000 and a remaining useful life of 5 years, at which time its salvage value will be zero. it has a current market value of $49,000. variable manufacturing costs are $33,300 per year for this machine. information on two alternative replacement machines follows. alternative a alternative b cost $ 115,000 $ 117,000 variable manufacturing costs per year 22,900 10,100 1. calculate the total change in net income if alternative a and b is adopted. 2. should xinhong keep or replace its manufacturing machine