during two years of college, a student earned $12,000. the second year she earned $2,000 more than twice the amount she earned the first year. how much did she earn the first year?

Ineed with number 6 , explain how to get 1978

The cost of using a service is $0.25 per min. what equation correctly represents the total cost c, in dollars, for d days of use?

The architect's side view drawing of a saltbox-style house shows a post that supports the roof ridge. the support post is 8 ft tall. the distance from the front of the house to the support post is less than the distance from the post to the back of the house. how far from the front of the house is the support post positioned?