Fill in the missing word an unknow or changeable quantity is called an

Anne is twice as old as bill, and bill is 3 years older than christie. the sum of anne s and christie s ages equal 72. find their age difference.?

Ricardo ran the 400 meter race 3 times his fastest time was 54.3 seconds his slowest time was 56.1 seconds if his average time was 55.0 seconds what was his time for the third race

The rectangle on the right is the image of the rectangle on the left. what transformation would result in this image? reflection rotation translation dilation