Brent has two barcode printing machines. each machine can print 25 barcodes per minute. on day 1, only the first machine was used, and it printed 95 barcodes. on the following day, the first machine printed for x minutes and the second machine printed for y minutes. which expression shows the total number of barcodes printed by both machines during these two days?

It costs 4.25 for 1 pound of roast beef. how much will it cost to purchase 2.5 pounds of roast beef? round to nearest cent

Apsychology student wishes to investigate differences in political opinions between business majors and political science majors at her college. she randomly selects 100 students from the 260 business majors and 100 students from the 180 political science majors. does this sampling plan result in a simple random sample? why or why not? no, because each group of 200 students in the sample does not have the same chance of being selected. yes, because each group of 200 students in the sample has the same chance of being selected. no, because each individual student does not have an equal chance of being selected. yes, because each individual student has the same chance of being selected.

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