Answer:
-9/2
Step-by-step explanation:
-4n=12+6
-4n=18
n=-18/4
n=-9/2
It is an equaiton because there is an 'equals' sign
it expresses equality
c is equal to 75 times x
it expresses equality
Answer: -13
Step-by-step explanation:
= 4*(1/4) - 8(2-1/4)
= 1-8(7/4)
= 1-14
= -13
Its 9 because it includes f(x)
Given that,
The given expression is : 
To find,
The value of the above expression when x = 2 and y = 4
Solution,
We have,

Put x = 2 and y = 4 in the above expression.

So, the value of the above expression is 18.