HELP with this log question?

0 ⤊

Solve for x to two decimal places: 2^x = 5

a) 2.32
b) 0.43
c) 2.5
d) 0.21

2007-03-08 04:18:02 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics

Use the same base (10 or e) for the log expressions.
log[2^x] = log[5]
x log[2] = log[5]

x = log5 / log2 = 2.321928 [Choice "A"]

2007-03-08 05:07:45 · answer #1 · answered by answerING 6 · 0⤊ 0⤋

log[2^x] = log[5]
x log[2] = log[5]
x = log[5/2]

2007-03-08 04:27:11 · answer #2 · answered by kellenraid 6 · 0⤊ 0⤋

2007-03-08 04:21:38 · answer #3 · answered by jaywill528 2 · 0⤊ 0⤋