Isobel is producing and selling cassette tapes of her rock band. When she had sold 10 tapes, her net profit was $11. When she had sold 20 tapes, however, her net profit had shrunk to $9 due to increased production expenses. But when she had sold 30 tapes, her net profit had rebounded to $13.

x = 17

step-by-step explanation:

1st step: isolate x.

24 - 3x = -27

-24         -24

-3x   =   -51

2nd step: divide.

-3x     =   -51

  3             3

  x       =     17

hope this

i use my brain for prombles like this maybe you could try it

step-by-step explanation:

step-by-step explanation:

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the surface area is 124cm²

step-by-step explanation:

length: 4cm

width: 9cm

height:   2cm