What is the result of substituting for y in the bottom equation?
y = x - 3
y = x2 + 2x - 4

here is a big fat

take the logarithm of both sides (the base of the log doesn't matter):

apply the exponent property - this says that :

distribute the log terms on both sides:

group like terms together:

divide through both sides by the coefficient on :

you can do some additional rewriting here using the properties of the logarithm to simplify things if you like:

answer would be 8.64 or s = 11π/4 inches

step-by-step explanation:

s = r θ  

where s = arc length  

r = radius = 3 inches  

θ = central angle in radians = ( π /180)*165  

s = 3(π/180)*165  

= 8.64 inches

"exterior angles = 360 / number of sides.

60 = 360 / sides

sides = 360 / 60

sides = 6"