A jewellery firm buys semi precious stones to make bracelets and rings. The supplier quotes a price of $8 per stone for quantities of 600 stones or more, $9 per stone for orders of 400 to 599 stones, and $10 per stone for lesser quantities. The jewellery firm operates 200 days per year. Usage rate is 25 stones per day, and ordering costs are $48 i) If carrying costs are $2 per year for each stone, find the order quantity that will minimize total annual cost

a4 - 3a2 - 1

step-by-step explanation:

step   1   :

equation at the end of step   1   :

  ((a4) -   3a2) -   1

step   2   :

trying to factor by splitting the middle term

2.1     factoring   a4-3a2-1  

the first term is,   a4   its coefficient is   1 .

the middle term is,   -3a2   its coefficient is   -3 .

the last term, "the constant", is   -1  

i am sure it will be 90 degrees.

step-by-step explanation:

1/3 + 1/5 = 8/15.

step-by-step explanation:

hope it