answer:In April, Natalia sold clips to 48 friends. In May, she sold half as many clips, so she sold to 48/2 = 24 friends. The total number of clips she sold in April and May is 48 + 24 = 72. 72 The answer is: 72

answer:On their first expedition, they stayed for three weeks, which is 3 * 7 = 21 days. On their second expedition, they spent two weeks more than their first expedition, so they spent 3 + 2 = 5 weeks on the island. This is 5 * 7 = 35 days. On their last expedition, they spent twice as many weeks as their second expedition, so they spent 5 * 2 = 10 weeks on the island. This is 10 * 7 = 70 days. Therefore, the total number of days they spent on the island on all the trips is 21 + 35 + 70 = 126 days. 126 The answer is: 126

answer:Each bag of cat food weighs 3 pounds, so 2 bags of cat food weigh 3 * 2 = 6 pounds. Each bag of dog food weighs 2 more pounds than each bag of cat food, so each bag of dog food weighs 3 + 2 = 5 pounds. Therefore, 2 bags of dog food weigh 5 * 2 = 10 pounds. In total, Mrs. Anderson bought 6 + 10 = 16 pounds of pet food. There are 16 ounces in each pound, so Mrs. Anderson bought 16 * 16 = 256 ounces of pet food. 256 The answer is: 256

answer:The congruence x + 13 equiv 55 pmod{34} is equivalent to x equiv 42 pmod{34}. To find the solutions, we look for positive integers x such that x = 34k + 42 for some integer k. Since x must be less than 100, we can check the values of k that satisfy 34k + 42 < 100. We find that k = 0, 1, 2 satisfy this inequality, so there are boxed{3} solutions. The answer is: 3