Its an Integer. Integers include negative numbers, zero and positive numbers :)
Answer: f(5x)=(50x^2)-5
Step-by-step explanation:
f(5x)=2(5x)^2-5
=2(25x^2)-5
=50x^2-5
Answer:
Second option is the right choice.
Step-by-step explanation:
Divide the second equation by -5 and you'll get the equation same as first equation.

So, it has infinite many solutions.
8... it's eight, just that simple
Answer:
22.86 centimeters (9 inches into cm is 22.86 cm)