Oni was timing her 100 meter sprints . Her first five sprints were 12.568 seconds , 11.426 seconds , 12.324 seconds , 11.981 seconds , and 12.601 seconds . Which two estimation techniques will give the same result for the total number of seconds for all five sprints A. front-end and clustering B. front-end and rounding to the nearest tenth C. clustering and rounding to the nearest tenth D. rounding to the nearest tenth and rounding to the nearest hundredth

The westins and the shermans live in the same city and pay the same sales tax rate, and both families made $14,000 in taxable purchases last year. if the westins made $86,000 and the shermans made $33,000 last year, is the sales tax in their city an example of a regressive tax? yes, because the westins and the shermans both paid the same sales tax rate. b. no, because the shermans paid a higher percentage of their income in sales tax than the westins did. c. no, because the westins and the shermans both paid the same sales tax rate. d. yes, because the shermans paid a higher percentage of their income in sales tax than the westins did.