If I order up to 500 units of a product, I pay $3.00 per unit.
If I order from 501 through 1200 units, I pay $2.70 per unit.
If I order from 1201 through 2000 units, I pay $2.30 per unit.
If I order more than 2000 units, I pay $2.00 per unit.
Write a formula that expresses the purchase cost as a function of the number of units purchased. (The formula you write in C15 and D15 should work for all the rest of the tables)
1. Name the cells, by using keywords like cutoffX & priceX, in the following lookup table.
		cutoff	price
		1	$ 3.00
	cutoff1	500	$ 2.70
	cutoff2	1200	$ 2.30
	cutoff3	2000	$ 2.00
2. Write an IF formula and a VLOOKUP formula that express the purchase cost as a function of the number of units purchased. (The formula you write in C16 and D16 should work for all the rest of the tables)
	Order quantity	Total Cost (IF)	Total Cost (Lookup)
	450
	900
	1450
	2100