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Maths Exercices

Find points on a function graph

The graph shows the total cost C, in dollars, that a customer pays for n pounds of coffee from an online coffee merchant. The total cost includes a fixed fee for shipping.

How much does it cost to order 4 pounds of coffee?

From the graph, we see that the cost to order 4 pounds of coffee is $23.


The graph below displays the relationship between the number of printers in use in an office and the number of pages per minute that can be printed in the office.



How many printers does the office need to have in order to be able to print 15 pages per minute?
1 printer
2 printers
3 printers
4 printers