Question

At a peanut butter factory, the daily production cost, C, for j jars of peanut butter is modeled by the graph below. What are the domain and range of the function C(j)?

mc021-1.jpg
domain: all real numbers
range: mc021-2.jpg
domain: all real numbers
range: mc021-3.jpg
domain: mc021-4.jpg
range: mc021-5.jpg
domain: mc021-6.jpg
range: mc021-7.jpg

Answer 1

I can’t see the graph you mentioned. Could you either upload the image or type the important points (the leftmost and rightmost x-values where the graph exists, and the lowest and highest y-values, and whether any endpoints are open or closed)?

If you’d rather do it yourself, here’s how to find the answer from the graph:
- Domain: look at the x-axis (j). The domain is all x-values from the leftmost point of the graph to the rightmost point (use brackets [ ] for included endpoints, parentheses ( ) for excluded endpoints).
- Range: look at the y-axis (C). The range is all y-values from the lowest point of the graph to the highest point (again note whether endpoints are included or excluded).

Give me the image or those endpoint values and I’ll give the exact domain and range.