Assume that x1, x2 and x3 are the dollars invested in three different common stocks from new york stock exchange. the investing company requires that more than 60% of the dollars invested should be in "stock 1". the constraint for this requirement can be written as:

a. x1 ? 0.60
b. x1 ? 0.60 (x1 + x2 + x3
c. 0.4x1 - 0.6x2 - 0.6x3 ? 0
d. 0.4x1 - 0.6x2 - 0.6x3 ? 0

you can lose ranking 2 ways.

1) you don't have enough points due to you expending them by asking questions/your answers are deleted.

2) your brainliest's expired. this means that brainliests, once they exceed the 30 day limit, expires. this is to ensure that you continue to contribute into the community at a constant rank if you want to continue to have/exceed the rank you have right now.

if you go to profile, and click "show more information" located on the bottom left of the box with your information (on top of the questions answered, questions asked, and friends), you will be given the following information (example):

member since : 02/13/2017, 18: 11

questions answered: 9741

questions asked: 162

no. of brainliest answers: 1575

brainliest answers in last 30 days: 10

warnings: 0 view

questions/answers reported: 2637

questions/answers incorrectly reported: 64

look at the "brainliest answers in the last 30 days". this is the one that will affect your rank other than your points. again, once your brainliest expires (was earned 31+ days ago), it will not be counted.

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what types of rivers

answerjointly by the fed and by the behavior of individuals who hold money and of banks in which money is held;

answercompetitive advantage;