A student purchased 9 binders for $11.07 . Which equation can be used to find the cost of each binder, b, in dollars?

11.07/9 =b  You only specifically asked for the equation

Step-by-step explanation:

11.07/9 =b is the equation why? because you bought 9 binders for 11.07 dollars so if you divide the price by the number of items bought you get the answer

It's quite simple, let me help!

If 9 binders are 11,07 you have to find the cost of one binder, by doing that you would create an equation to make it where 9 is dividable by the total cost, so it would be

9X= $11.07

Now You isolate the variable to get X alone and X is going to be the cost of one binder in dollars

Divide both sides by 9 and you get X=$1.23

Want to check your answer?

If one binder is $1.23 you can multiply

$1.23* 9 (binders) = $11.07

Which is correct because 9 binders is 11.07 according to the student.

for ex: the reciprocal of 3/4 is 4/3. it is the opposite.

reciprocal definition:

a mathematical expression or function so related to another that their product is one; the quantity obtained by dividing the number one by a given quantity.