The school store sells packs of 12 pens for $2.40.

select the three unit rates that describe this sale.

there is more than one correct answer

$0.20 per pen

$2.40 per pack of pens

5 pens per dollar

120 pens per $24

A,B,C

Step-by-step explanation: I did it on Imagine Math :)

.20, 2.40, and 5

Step-by-step explanation:

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.