9 1 point
Karla needs a box to pack her fish tank shown below. How many square feet of cardboard does she need to buy?
5
4 ft
6
2ft
6 ft
7
56 ft2
48 ft2
8
Ο Ο Ο Ο.
32 ft2
88 ft
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Determine the mean and variance of the random variable with the following probability mass function. f(x)=( 729divided by 91) (1 divided by 9) superscript x baseline comma x equals 1,2,3 round your answers to three decimal places (e. g. 98.765).

Find the solution(s) to the system of equations. select all that apply y=x^2-1 y=2x-2

Type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar. a city water tank holds 20 gallons of water. a technician empties 25% of the tank. how many more gallons of water must be removed from thetank so that it has 5 of the water that it started with: the technician must removemore gallons of water for the tank to have 5 of the water that it started with.