The ten guppies in vida's tank are 5, 5, 8, 8, 9, 10, 11, and 33 weeks old. a guppy of age n weeks is added to her tank. the sum of the mean, median and unique mode of the eleven guppies' ages equals the range. what is the sum of all possible integer values of n?

Clara schumann is buying bagels for her coworkers, she buys a dozen bagels priced at $5.49 a dozen. the bakery's cost for making the bagels is $2.25 per dozen. what is the markup rate based on selling price on a dozen bagels?

Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.

State one method by which you can recognize a perfect square trinomial.