Answer:
-√7
Step-by-step explanation:
radical roots always occur in pairs.
√7 is a root ,so -√7 should also be a root of polynomial f(x)
Answer:
The function is increasing for all real values of x where x < -1 and where x > 4
Step-by-step explanation:
The function is "not" increasing for all real values of x where x<0, when
-1 < x < 0
Dividing the given equation by 25 we get:

Applying the natural logarithm to the above equation we get:

Finally, solving for x we get:

Answer: Option A.
x + 2 = 7, x is a variable, but we can work out its value if we try! A variable doesn't have to be "x", it could be "y", "w" or any letter, name or symbol.