A company purchased 400 units for $20 each on January 31. It purchased 520 units for $26 each on February 28. It sold a total of 560 units for $40 each from March 1 through December 31. What is the amount of ending inventory on December 31 if the company uses the first-in, first-out (FIFO) inventory costing method

there is $9360 worth of invertory left as of december 31

Step-by-step explanation:

because they could drop even lower..

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.