The tax on an item is directly proportional to the price of the item. The total cost of a $4.80 item is $5.04. The equation that models this relationship, where cost is represented by y and the price of the item is represented by x is?

Which of the fallowing best completes the sequence 12,8,5, a) 1 b) 2 c)4 d)0

Aflute is on sale for 20% off. including the discount and 8% tax, the sales price is $216.

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?