The combination for a lock is a 3 digit number. the digits are the prime factors of 42 listed from least to greatest. what is the combination for the lock?

Which of the following expressions is equal to 2x^2+8

Eric drove 275 miles in 5 hours. at the same rate how long would it take him to drive 495 miles?

Sophia wrote an equation to represent the revenue of a movie theater for one day. she let x represent the number of child tickets sold and y represents the nunver of adult tickets sold. if a child ticket cost $4, an adult ticket cost $6, and the total revenue for the daybwas $420, which equation could sophia use to represent the number of chikd and adult tickets that were sold?