What is the domain of the function on the graph?

all real numbers
all real numbers greater than or equal to 0
all real numbers greater than or equal to –2
all real numbers greater than or equal to –3

my answer is D

Step-by-step explanation:

Go to the left-most point on the graph. That point is (-3,-2). The x coordinate of this point is x = -3. So the smallest x can be is x = -3. The variable x can't be any smaller. It can be larger than -3. Since x can equal -3 or be larger, this makes the domain to be  (x is greater than or equal to -3) In interval notation, you would write The square bracket tells you to include the endpoint -3 while the curved parenthesis tells you to exclude infinity as an endpoint. Plus or minus infinity is always associated with a curved parenthesis.

to determine the unit cost your would divide the total cost by the number sold.

7 bagels for $4.41       $4.41/7 = $.63 each at fresh side

5 bagels for $3.60         $3.60/5 = $.72 each at value mart