18. A store sells two different kinds of rulers, plastic and wood. The receipts show that they have sold 35 total rulers today. The plastic rulers cost $2 each and the wood rulers cost $3 each. $82 worth of rulers were sold today. How many of each type of ruler were sold?

Sam makes his sales calls according to a pattern. he travels either north or south depending on the calendar. some of his past trips were as follows: on february 17, april 24, june 10, september 19, and november 3 he drove north. on february 28, may 25, august 22, november 20, and december 18, he drove south. describe sams' pattern. in which direction will sam drive on oct4 and oct 24?

My math teacher told my class to "steal" a 6th grade fraction word problem from the internet, word problems? : -p requirements: only a 1 step word problem. needs to be complex.

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?