Question

Can somebody please help me with the domain & function

Answer 1

Reverse the table and observe

• For 1 month cost is 50
• For 2 months the cost is 100

See the pairs are (1,50) and (2,100) and so on

We know domain is set of x values and range is set of y values.

As there is no extra cost and the cost is 50$ per month cost depends upon the month means months are independent and cost is dependent , months are x and cost will be y then

The equation is

• y=50x

So here domain is all months

• {1,2,3,4,5,6,7,8,9,10,11,12}

Answer 2

Explanation:

Step 1: Determine a function

Since we are increasing the amount paid by $50 each month that means that we can just use a simple equation such as y = 50x to signify that every time you add a month $50 would be added. For example, we take 3 months and put that into x which would give us $150 which is the correct answer.

y = 50x

Step 2: Determine the domain

Domain is the x-values that are being used. In this question, the y-values is the amount paid why the x-values are the months from 1-12.

Therefore, the domain of this function is {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12}.