exam Maths Puzzle Numerical Ability

studing for my finals....need help!!!

write as a single logarithm:

2 log 2 - 3 log x - 1/2 [log(x+3) + log (x-2)]

THIS IS THE HARDEST ONE YET!!!!PLEASE HELP......AND THANK

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exam Other Question

Keith weighs 20 kg more than Beth, while Henry weighs 30 kg less than twice as much as Beth. If Keith and Henry weigh the same, how much does Beth weigh (in kg)? Television sets: What does it mean to refer to a 20-in TV set or a 25-in TV set? A 15-in TV set also has a width of 12-inches. What is its height?

I am stumped on how to set up the problem into an equation. Can someone help me?