A random sample of dogs at different animal shelters in a city shows that 15 of the 55 dogs are puppies. The city's animal shelters collectively house 1,540 dogs each year. About how many dogs in all of the city's animal shelters are puppies?

20 points for the answer. this is for real , don't put random ! a rectangle has a length of 4 centimeters and a width of 7 centimeters. what is the effect on the perimeter when the dimensions are multiplied by 5? the perimeter is increased by a factor of 5. the perimeter is increased by a factor of 20. the perimeter is increased by a factor of 25. the perimeter is increased by a factor of 100.