Show the ratio between 2:3:5 using counters. What three things does the ratio compare to?

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

Select the margin of error that corresponds to the sample mean that corresponds to each population: a population mean of 25, a standard deviation of 2.5, and margin of error of 5%

From the beginning of the day the temperature rose 15 degrees so that by 4 pm it was 87 degrees. what was the temperature at the start of the day