Does anyone have any questions
Something challenging

Does anyone have any questions
Something challenging

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solve for x (3 dp)
a) 3^x=19.
b) 2^1-x=7
c) (1/4)^x=75.
How to do this?

You need to use logarithms

a)
if 3 ^ x = 19
x = log 19 to the base 3
x = 2.68

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