The number of years a bulldog lives is a random variable with mean 9 and standard deviation 3 , while for chihuahuas, the mean is 15 and the standard deviation is 4 . approximate the probability the that in a kennel of 100 bulldogs and 100 chihuahuas, the average chihuahua lives at least 7 years longer than the average bulldog.

Paula makes stained-glass windows and sells them to boutique stores. if her costs total $12,000 per year plus $4 per window for the frame. how many windows must she produce to earn a profit of at least $48,000 in one year if she sells the windows for $28 each? 1. define a variable for the situation. 2. write an inequality that represents her profit. note: revenue is money coming in. cost is money going out. profit is the difference between the revenue and the cost. in other words: revenue - costs profit 3.using words, describe how many windows she must sell to have a profit of at least $48,000.

The poll report includes a table titled, “americans using cash now versus five years ago, by age.” the age intervals are not equal. why do you think the gallup organization chose the age intervals of 23–34, 35–54, and 55+ to display these results?

Acircle has a radius of 17. approximately what is the area of the circle