Question

Xavier is buying notebooks for school. The table below shows the number of notebooks he can buy and the total cost.

Which equation can be used to find the total cost, y, of n notebooks?
A. 2.41 - n = y
B. 2.41 + n = y
C. 2.41 × n = y
D. 2.41 ÷ n = y​

Answer 1

C

Explanation:

C. 2.41 × n = y

Answer 2

2.41 * n = y

Explanation:

From the table, we can notice that the value;

y/n is a constant for each of the rows

this represents the individual costs of each of the books

So, we have it that;

7.23/3 = 4.82/2 = 9.64/4 = $2.41

So, the books have a unit cost of $2.41

Hence, by multiplying the number of books n by 2.41 we can get the cost y

So mathematically, we have the relation as;

2.41 * n = y