Answer:
we don't know the exact value of "a number" so we can assign it the letter value x
so we know that x-8 is less than or equal to 17
you would solve this the same way you would solve any other equation so
x is less than or equal to 25
Answer:
B. 
Step-by-step explanation:
5÷7 is also
--that divided sign is what the fractional bar represents in a fraction.
now multiply 
both are the same result, so your answer is Choice B.

the va's are where x is undefined, or where the denomenator is zero
first simplify if applicable
cannot simplify
set denom to zero
2x-5=0
2x=5
x=2.5
the vertical assemtote is vertical so it is x=2.5 or 5/2
the VA is x=5/2
Answer:
Disadvantages of mathematicsl models are given.
Step-by-step explanation:
Disadvances of mathematicsl models are the model is a limited or bounded cases which taken from huge number of situations by ignoring many unknown facts of the real problem and does not include all important parameters or trivial parameters for accuricy of the result of system dynamics which gives a better result of the problem. The model may also only work in certain major state variables and parameters which may effect largly on the whole system.
Answer: 3
3x4 is 12
Hope this helps!