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123helpme

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what i need to find is the sound intensity for the following decibel values..

a) 100dB

b) 55dB

now the only relevant equation would be [tex]\beta[/tex]= 10 log (I[tex]_{}2[/tex]/I[tex]_{}1[/tex])

and I[tex]_{}1[/tex]=1.0x10^-12 W/m^2

i have attempted multiple times but can't seem to come to the correct answer

the textbook gave the answers but no solution

a)0.10 W/m^2

b) 3.2x10^-7 W/m^2

a) what i tried was subsituting [tex]\beta[/tex] for 100dB and I[tex]_{}1[/tex]=1.0x10^-12 W/m^2

but from there I am not quite sure what to do

help me please!