Answer:
The function f(x) when x=x-4 is
or 
Step-by-step explanation:
Given function f is defined by 
Now to find the function f(x-4):

Put x=x-4 in the above function we get

(using the formula
)

(adding the like terms)


Therefore
or 
The function f(x) when x=x-4 is
or 
Answer: 1.25$
Step-by-step explanation:
25% of 5 dollars (total) is 1.25
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The answer is B) ii
The notation "p --> q" means "if p, then q". For example
p = it rains
q = the grass gets wet
So instead of writing out "if it rains, then the grass gets wet" we can write "p --> q" or "if p, then q". The former notation is preferred in a math class like this.
So when is the overall statement p --> q false? Well only if p is true leads to q being false. Why is that? It's because p must lead to q being true. The statement strongly implies this. If it rained and the grass didn't get wet, then the original "if...then" statement would be a lie, which is how I think of a logical false statement.
If it didn't rain (p = false), then the original "if...then" statement is irrelevant. It only applies if p were true. If p is false, then the conditional statement is known to be vacuously true. So this why cases iii and iv are true.
Answer: 9x-15
Step-by-step explanation:
Given
34x-(25x-3)-18
Expand parenthesis
34x-25x+3-18
Put like terms together
(34x-25x)+(3-18)
Combine like terms
9x-15
Hope this helps!! :)
Please let me know if you have any questions