Answer :

Answer:

[tex]n\text{ + d}\leq15[/tex]

Explanation:

Amount of nickel Mark has = n nickels

Amount of dimes Mark has = d dimes

If he has at most 15 coins altogether, the inequality to repreent this situaltion is expressed as;

[tex]n\text{ + d}\leq15[/tex]

Note that the AT MOST means the total coins cannot be greater than 15 hence the reason why we used the "less than and equal to sign"

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