Answer:
42
Step-by-step explanation:
If we suppose the value is constant,
Divide 30/5 we get 6.
so now we know for every 1 x we get 6 y.
Multiply 6 times 7 = 42.
The value of y = 42 when x = 7.
Y=42
30÷5=6
so 7x6=42
12
c
342
x=5
72+72+18(5)+9+18 (5)+9=342
yes it is rational, as it can be expressed in the form p/q where p=-2 and q=3
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