Combine like terms in the following : 7x+2y-6y+3x-10-5x

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

The sales tax rate is 7.25%. how much tax in dollars is added on an item that costs $56.00? a. $4.06 b. $7.25 c. $14.50 d. $60.06

Elizabeth is using a sample to study american alligators. she plots the lengths of their tails against their total lengths to find the relationship between the two attributes. which point is an outlier in this data set?