Bantuin jawaaab! Diketahui f(x)=5x-1/4x+3; x tidakboleh sama dengan -3/4 dan f^-1(p)=4.nilai p adalah..

y = (5x - 1)/(4x + 3)
y(4x + 3) = 5x - 1
4xy + 3y = 5x - 1
4xy - 5x = -3y - 1
x(4y - 5) = -3y - 1
x = (-3y - 1)/(4y - 5)
f^-1(x) = (-3x - 1)/(4x - 5)
f^-1(p) = (-3p - 1)/(4p - 5) = 4
p = 1