Forty people were randomly sampled and surveyed as to the number of pets in their household. The results are listed below.

i need help with this and another question please.;

International calls require the use of a country code. many country codes a 3-digit numbers. country codes do not begin with a 0 or 1. there are no restrictions on the second and third digits. how many different 3-digit country codes are possible?

Julius sold five times as many computers as sam sold last year. in total, they sold 78 computers. how many computers did julius sell?

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?