28. there are 8 oranges in a bowl. write a rule for the number y of oranges
that are left in the bowl as a function of the number x of oranges that are
taken from the bowl.

The rule is y = 8 - x

Step-by-step explanation:

* Lets explain how to solve the problem

- There are 8 oranges in a bowl

- The variable y represents the number of oranges that are left

  in the bowl

- The variable x represents the number of oranges that are taken

  from the bowl

- To make the rule for these situation we must to write two sides equal

  each other

∵ The total number of oranges is 8

∵ The number of oranges that are taken from the bowl is x

∵ The number of oranges that are left in the bowl is y

- We can find the number of oranges that are left by subtracting the

 number of oranges that are taken from the total number of oranges

∴ y = 8 - x ⇒ OR ⇒ y = -x + 8

* The rule for the number y of oranges  that are left in the bowl as a

  function of the number x of oranges that are  taken from the bowl

  is y = 8 - x

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step-by-step explanation: