Determine whether each x-value is a solution (or an approximate solution) of the equation.
log4(3x)=3
a. x≈21.333
b. x=-4
c. x=64/3

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For the quadratic function [tex]y=(x+4)^2-1[/tex] , do the following: a) rewrite the function in the standard form, b) rewrite the function in intercept form, c) find the vertex, d) find the y-intercept, e) find the x-intercepts.

Either enter an exact answer in terms of \piπ or use 3.143.14 for \piπ and enter your answer as a decimal.