Josie found that 3.28+3.28+3.28= 9.84, what is the missing factor in the related multiplication problem

The expression which is:

3.28 + 3.28 + 3.28 = 9.84

Is simply equivalent to the expression of thrice the value of 3.28 is equal to 9.84 or:

3 x 3.28 = 9.84

The two are simply equal since in the 1st expression there are three 3.28 and in the 2nd expression there are also three 3.28.

  or  

step-by-step explanation:

if the four friends split the cost, p, of the pizza evenly, then each friend pays one-fourth of the cost of the pizza.

the expression is   or