A computer tech charges a $30 initial fee to come and fix a household computer plus $15 per hour. Which of the following linear equations does this follow?

Ahmed plans to add a rectangular sunroom to his house. the sunroom will have a length of 14 feet and a width of 10 feet, and the construction will cost $40 per square foot. how much more would the sunroom cost if it’s width were increased to 12 feet?