The result is number
where:

Hope this helps.
Answer: 20 lawns
Step-by-step explanation:
35÷7=5
5×4=20
This is F(n) = 3n
The X is an interger which is holding a value
The relationship between Y and X is 3n as we multiply X by 3 to get the value of Y and is proven yet so.
Given data:
The expression for the sum of 7 and z is,

Thus, the sum of the expression is 7+z.