Laila is playing a game where there are 4 blue markers and 6 red markers in a box. She is going to pick 3 markers, and replace each marker immediately after she picks it.
If she picks all 3 red markers, she will win a total of $400. If the first 2 markers she picks are blue, she will
win a total of $300. Under any other outcome, she will win $0.
What is the expected value of Laila's winnings?
Round your answer to the nearest cent.

answer: bearing in mind that a rectangle has a perimeter of length + length + width + width.

step-by-step explanation:

p = perimeter

l = length

x=width

p = 2l + 2x

p = 2(l+x)     < ==== perimeter of the base of the box.

$3720

step-by-step explanation:

taxable income = $31000

as per the 2018-2019 us tax bracket, the tax rate is 12% for an individual whose taxable income is between $9,526 to $38,700.

so, the tax to be paid by him = 12% of 31000

= 0.12 * 31000     [12% converted to decimal as 0.12]

= $3720

it is 10.6 according to my calculations