The cost of producing pens is $200 at the break-even point. What is the amount of income from selling pens at the break-even point? Explain your reasoning.​

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,

x=-7

step-by-step explanation:

x+3=-10

-10+3=-7

x=-7

d

because parallelagram have all 4 angels the same size dependeing and a rectangle and square are oth parallelogram