(50 points) determine whether x^-2 is always, sometimes or never a positive value. explain your reasoning. (for any value of x).

never because you're multiplying the number -2 times so it will be positive only if the variable is positive.

Step-by-step explanation:

what if x=2?

2^-2

= 1 /2*2

= 1 /2^2

= 1 /4 or 0.25

what if x=-5?

-5^-2

=−1*5−2

=−1*  1 /5*5

= −1 /5*5

= −1 /5^2

= −1 /25  or-0.04

n

f(x) has value 150 at x= 0

and 0 at x= 3

so d(f(x))/dt = slope = -150/3 = -50

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