Respuesta :

In the expression 15+n, the sum of number 15 and variable n is given.

Consider option 1,

If Nick took n cookies from the plate consist of 15 cookies, then expression for the remaining cookies is,

[tex]15-n[/tex]

Consider option 2,

The expression for total cost of n CD's with each CD cost $15 is,

[tex]15n[/tex]

Consider option 3,

The expression for total number of pages read by Mathew in n days , with 15 pages every day is,

[tex]15n[/tex]

Consider the option 4,

The total number of students with 15 females and n males is,

[tex]15+n[/tex]

So last option is correct for the expresion 15+n.

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