The equation for the purchase of n number of notebooks by Caitlin is
4n = c , where c is representing the cost that Caitlin paid.
The unitary approach is a strategy for problem-solving that involves first determining the value of a single unit, then multiplying that value to determine the required value.
Finding the value of a single unit using the unitary technique allows us to determine the value of the necessary number of units based on this value.
the price for one notebook was = $4 each
n number of notebooks were purchased by caitlin
therefore the cost price of 4 notebooks will be = 4 * n
as per given in the question cost price = c
therefore the equation formed will be
4n = c
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