At a park, there are 38 people playing tennis some or playing doubles and some are playing singles there are 13 matches in progress, a doubles match requires 4 players and a singles match requires 2 players. a. write a system of two equations that represents the number of singles and doubles matches going on. b. how many matches of each kind are in progress

Achel bought 12 rolls of packing tape and paid a total of $33.60. kevin also bought rolls of packing tape. the table shows the total amount he is paid for different numbers of packing tape. number of rolls of packing tape total amount paid 2 $6.40 5 $16.00 8 $25.60 how do the unit rates compare? select from the drop-down menus to correctly complete the statement. rachel's unit rate is than kevin's because is greater than .

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

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?