The cost of electricity per unit usage can be seen in the scatterplot shown below.

Using the best-fit line, which of the following predictions is TRUE?

• a.)An electricity bill for 16 units would cost $24.
• b.)An electricity bill for 23 units would cost $38.
• c.)An electricity bill for 11 units would cost $19.
• d.)An electricity bill for 9 units would cost $11.