b=16 , First you multiply 30 by 2 to see what sum you need for the numerator. Then you subtract the 60 that you get by the 12 and get 48. So 3 multiplied by b should give you 48. So you just divide 48 by 3 and get 16.
32% of 35 is 32% times 35, which is 11.2
Assignment: 
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Answer: 
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Explanation: 
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[ Step One ] Rewrite 

[ Step Two ] Apply perfect square formula
Note: Perfect Square Formula: 


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The answer is D)You Can draw straws 12 times with 12 long straws an 4 short straws.