-7*3^(0.25x) = -10 divide both sides by -7
3^(0.25x) = 10/7 take the log of both sides
log 3^(0.25x) = log(10/7) and we can write
(0.25x) * log 3 = log(10/7)
x * (0.25)log 3 = log(10/7) diide both sides by (0.25)log3
x = log(10/7) / [ (0.25 log 3 ] ≈ 1.299
