Given the line q and r are parallel lines and m <3=123 find other angle measure

Which of the following is best modeled using a linear equation y=ax+b, where a is less than 0?

Given the equation negative 4 square root x minus 3 equals 12

Emily works as a painter. for each job, it takesher 30 minutes to prepare an interior wall ofa house before she paints and 2 minutes persquare yard to paint that will. the graph belowshows the total time it would take her to do a job,based on the total area of the wallhow long does it take her to do a job when she paints a wall with an area of 15 square yards?