Without using table....log(base 5) (8/2) + log(base 5) 3(15/2) -log(base 5) (81/8)
Here you need to use the law of logs.
Anything that is added will be multiplied, anything that is subtracted will be divided, anything that is multiplied will be taken to a power.
log(base5) (8/2)(15/2)^3 divided by 81/8
Simplify this first and then continue.