7. In the year 2000, the number of hazardous waste sites in State X was 8 less than twice the number of hazardous waste sites in State Y. Suppose

there were 34 such sites in State X. Write and solve an equation to find

the number of hazardous waste sites in State Y, n, in the year 2000.

Number of hazardous waste sites in State Y is 21.

Step-by-step explanation:

Step 1: Let the number of hazardous waste sites in State Y be n. Then as per the given data, in the year 2000, number of hazardous waste sites in State X is 2n - 8. Also, total sites in State X is 34. Step 2: Form an equation out of the given data.

⇒ 2n - 8 = 34

⇒ 2n = 42

⇒ n = 21