SOLUTION: 10000^3.21^x = 340000 A 0.045 B0.457 C1.376 D0.543 E 0.431 F 2.565 128(11.36)^x = 100 A 2.392 B-0.632 C1.581 D-0.102 E 0.632 F 1.576

Question 769859: 10000^3.21^x = 340000
A 0.045
B0.457
C1.376
D0.543
E 0.431
F 2.565

128(11.36)^x = 100
A 2.392
B-0.632
C1.581
D-0.102
E 0.632
F 1.576
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
10000^3.21^x = 340000
3.21^x(log10000)=log340000
3.21^x=log(340000)/log(10000)
3.21^x=1.383
xlog(3.21)=log(1.383)
x=log(1.383)/log(3.21)
x=0.278 (does not match any of given answers)
..
128(11.36)^x = 100
(11.36)^x = 100/128
xlog(11.36)=log(100/128)
x=log(100/128)/log(11.36)
x=-0.102(ans D)

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