The total cost of tickets is a function of the number of tickets purchased
In this function, which variable is dependent?
O total cost of tickets
O the number of tickets purchased

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?

Ill mark the brainliest if you me with the these three questions 7,8,9

Lucy is a dress maker. she sews \dfrac47 7 4 of a dress in \dfrac34 4 3 hour. lucy sews at a constant rate. at this rate, how many dresses does lucy sew in one hour? include fractions of dresses if applicable