You just substitute the value of x in the given equation:
f(x) = 2x^2 - 5
f(-4) = 2 (-4)^2 -5 = 27
f(x) : a name given to the equation
f(-4): refer to the equation when the value of the independent variable x has the value between the brackets.
Answer:
-6
Step-by-step explanation:
Use a calculator
12 by 8 ft. :) If you multiply the perimeter is 96. I hope this helps!
Answer:
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Step-by-step explanation:
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Sorry i dont know but if you want points you could spam things like this and get points
Answer:
The domain is 
Step-by-step explanation:
Given functions
and 
Subtract these two functions:

Plot these difference on the coordinate plane (see attached diagram). This function is defined for all vlues of x, so the domain is 