Answer:
n > 4
Step-by-step explanation:
Let's assume that we want the value, not volume, of the expression 7*n/4 to be greater than 7. We can write this as:
7*n/4 > 7
7*n > 28
n > 4
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Any value of n that is greater than 4 will satisfy this relationship. For n = 4, the expression becomes 7(4/4) > 7, and this is not true. 7 is not greater than 7. n must be > 4, if only bt a small amount.