What is the equation of the line passing through the point (1,2) and (-2,5)

Will mark the brainliest.paula makes stained-glass windows and sells them to boutique stores. if her costs total $12,000 per year plus $4 per window for the frame. how many windows must she produce to earn a profit of at least $48,000 in one year if she sells the windows for $28 each?

What is the domain of the step function f(x)=[2x]-1?

If jklm is a trapezoid, which statements must be true?