answer:Nadia bought 20 roses, which cost 5 each, so she spent 20*5 = 100 on roses. She also bought 3/4 times as many lilies as roses, which is 3/4*20 = 15 lilies. Lilies cost twice as much as roses, so each lily costs 2*5 = 10. So Nadia spent 15*10 = 150 on lilies. Therefore, the total amount of money Nadia used to buy the flowers is 100+150 = 250. 250 The answer is: 250

answer:There are 60 seconds in 1 minute, so there are 60 * 6 = 360 seconds in 6 minutes. If Darma can consume 20 peanuts in 15 seconds, then she can consume 360 / 15 = 24 sets of 20 peanuts in 6 minutes. Therefore, she can eat 24 * 20 = 480 peanuts in 6 minutes. 480 The answer is: 480

answer:A number is divisible by 9 if and only if the sum of its digits is divisible by 9. The sum of the digits in 437{,}d03 is 4+3+7+d+0+3=17+d. The smallest digit d that makes 17+d divisible by 9 is d=boxed{1}, since 17+1=18 is divisible by 9. The answer is: 1

answer:To simplify sqrt{288}, we can factor out the perfect square 16 from 288. We have sqrt{288}=sqrt{16 cdot 18}=sqrt{16} cdot sqrt{18}=4 sqrt{18}. Since 18 has a perfect square factor of 9, we can simplify further: 4 sqrt{18}=4 cdot sqrt{9 cdot 2}=4 cdot 3 cdot sqrt{2}=12 sqrt{2}. So the simplified form of sqrt{288} is boxed{12 sqrt{2}}. The answer is: 12sqrt{2}