G G 2x+4y=12
Please explain it to me

Given the function f(x) = log base 4(x+8) , find the value of f^-1(2)

During a bike challenge riders have to collect various colored ribbons each 1/2 mile they collect a red ribbon each eighth mile they collect a green ribbon and each quarter mile they collect a blue ribbion wich colors of ribion will be collected at the 3/4 markrer

Secant be and cf intersect at point d inside a what is the measure of cde