Question 232755
.30 = 7-50+45(1+x)^-.25
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0.3 = -43 + 45/(1+x)^0.25
43.3 = 45/(1+x)^0.25
(1+x)^0.25 = 45/43.3
1+x = (45/43.3)^4
x = (45/43.3)^4 + 1
x = ~ 2.166537