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which expression represents a rational number?
5/9 + (square root of 18)
pie+ (square root of 16)
2/7 + (square root of 121)
3/10 + (square root of 11)

Step-by-step explanation:

Since, a real number is called rational number if it can be expressed in the form of ,

Where, p and q are integers,

S.t. q ≠ 0,

If the number is not a rational number then it is irrational,

Now, the sum or difference of two rational numbers is a rational number,

While, the sum or difference of a rational number and an irrational number is an irrational number.

∵ √18, √11 and are irrational numbers,

Also, , and are rational number,

Now,

Hence,

step-by-step explanation:

i hate black

where is the graph? need more info