If a = {1, 2, 3} and b = {1, 2, 3, 4, 5, 6, 7, 8} then a ∪ b

Find the missing factor. 7s2 + 25s + 12 = (s + 3)( ).

An animal shelter has 21 puppies. if the puppies are 28% of the total dogs and cat population how many dogs and cats are in the animal shelter

For the rule of 78, for a 12-month period, the last term in the sequence is 12 and the series sums to 78. for an 10 month period, the last term is and the series sum is . for a 15 month period, the last term is and the series sum is . for a 20 month period, the last term is and the series sum is