The average of the first 3 numbers was 28. The average of the next 12 numbers was 38. What was the overall average of the numbers? ***NO SPAM, PLEASE***

Use set buikder notation to represent the following set: {, -2, -1, 0}

Is the square root of 4 plus the square root of 16 rational?

Jayne is studying urban planning and finds that her town is decreasing in population by 3% each year. the population of her town is changing by a constant rate.true or false?