Identify the property illustrated by the statement. Assume all variables represent real numbers.
(7 + 1) + 3 = (1 + 7) + 3
A- Associative
B- Distributive
C- Closure
D-Commutative

Which is an equation for the nth terms of the sequence 12,15,18,21

Arandom sample of 150 high school students were asked whether they have a job. the results are shown in the table. have a job do not have a job male 48 35 female 41 26 select a ord or phrase from the drop-down menus to correctly complete the statements describing the association.

Tom wants to order tickets online so that he and three of his friends can go to a water park the cost of the tickets is 16.00 per person there is also a 2.50 one-time service fee for ordering tickets online write an expression in term of n that represents the cost for n ordering tickets online