Question

Y^(-2/3)=4/9

Answer 1

y^(-2/3) = 4/9

log2(y^(-2/3)) = log2(4/9)
(-2/3) log2(y) = log2(4/9)
log2(y) = (-3/2)log2(4/9)

log2(y) = log2((4/9)^(-3/2))

y = (4/9)^(-3/2)

y = sqrt((9/4)^3)

y = (9/4) sqrt(9/4)
y = (9/4)(3/2)
y= 27/8

that should be it... might wanna double check it tho.