Chapter 6.5, Problem 44STP

To determine

Function for the situation.

Answer to Problem 44STP

Domain for market A rice package is natural numbers and domain for market B is positive real numbers up to the maximum quantity of rice in stock.

Explanation of Solution

Given data:

In market A 1lb package of rice sold for $2

And in market B a bulk of rice is sold at $2/lb

Calculation:

Let the cost buying rice be y and weight of rice be x

For market A

The cost of 1lb package is $2

So cost of x lb package $2x$

So the function is $y=2x$

For Market B

The cost of 1lb of rice is $2

So cost of x lb rice is $2x$

So the function is $y=2x$

Market B, selling rice in bulk, allows a continuous quantity of rice for each or any purchase, while market A allows only Natural numbered pound of rice for any purchase.By which the function have different domains.

Domain for market A rice package is natural numbers and domain for market B is positive real numbers up to the maximum quantity of rice in stock.

Conclusion:

Domain for market A rice package is natural numbers and domain for market B is positive real numbers up to the maximum quantity of rice in stock.