A model of a rectangular stove top with four circular burners is shown. The side lengths of the stove top and the diameters of the burners are labeled. Which measurement is the best estimate of the area in square inches of the stove top that does not include the area of the burners?
A)108 in.2
B)492 in.2
C)420 in.2
D)528 in.2

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6 adults and 9 children went.

a + c = 15

12a + 9c = 153

12(6) + 9(9) = 153

72 + 81 = 153

12r - 8 - 12

you have to combine like terms. below i have bolded the like terms:

12r - 8 - 12

together it combines to:

12r - 20

hope this !

it would be 4 over -2 divided by -1 over 3.

if you want a solution it would be 4

you flip it so it would be 4/-2 divided by 3/-1 then it would be 12/3 and you would simplify it to 4