Answered

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Abi has 20 cents. Se bought x pencils for 3 cents each. If y equals the number of cents left, write an equation that shows the dependence of y on x. What is the domain of the function?

Sagot :

mhanifa

Answer:

The function would be:

  • y = 20 - 3x

Since y should be positive or zero:

  • 20 - 3x > 0
  • 3x < 20
  • x < 7

So x can get values from 0 to 6.

The domain is:

  • x∈N, x = [0, 6]

Answer:

function= y=20-3x

Domain= 1,2,3,4,5,6

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