Since F(X) = 3^X,
F(4) = 3^4 = 81
Answer:

Step-by-step explanation:
Using the rule of exponents
=
, then
=
= 
Answer:
y = -3x+8
Step-by-step explanation:
formula = y=mx+b
slope is m
y-intercept is b
Their weights would be different from another, because of the mass of the wood. Sure, they may have the same dimensions, but does a square of feathers weigh as much as a square of metal?