Answer:
A negative exponent means how many times to divide by the number.
Step-by-step explanation:
Example: 8 to the power -1 = 1 ÷ 8 = 1/8 = 0.125.

Let
, so that differentiating both sides wrt
gives

If
and
, the above reduces to

This is the slope of the tangent line, which has equation

Answer:
-14 = n
Step-by-step explanation:
56 = -4n
Divide each side by -4
56/-4 = -4n/-4
-14 = n