Question

solve the given equation
log2x=4

Answer 1

2

Answer 2

2 * ? = 4

Answer 3

-16 c. 8
16 d. 4

Answer 4

it 2 because 2x2=4

Answer 5

but if the chooses are -16 8 16 or 4

Answer 6

raise both sides are powers of the base, its one of the 1st log laws

if \[\log_{a} (x) = b~~~~then~~~~~ a^{\log_{a}(x)} = a^b~~~so~~x = a^b\]

Answer 7

so in your question you have a = 2 and b = 4

Answer 8

looking at the choices... you can eliminate -16 as you can't take the log of a negative.

Answer 9

\[\log_{2} x=4\]

Answer 10

@campbell_st could you help out here after wards http://openstudy.com/updates/54dcf719e4b0b0ad8853e8cf

Answer 11

my bad i am new and i did not know that there way the equation that i could do