The cost to produce one laptop computer is $750 plus a one- time fixed cost of $130,600 for research
and development. The revenue received from selling one laptop computer is $1375.
(a) Write a formula that gives the cost of producing x laptop computers.
(b) Write a formula that gives the revenue R from selling x laptop computers.
(C) How many laptop computers need to be sold to yield a positive profit?

In the proof of the triangle angle sum theorem, you must draw an auxiliary line. which construction must you use to draw this line?

Which statements are true? check all that apply. the line x = 0 is perpendicular to the line y = –3. all lines that are parallel to the y-axis are vertical lines. all lines that are perpendicular to the x-axis have a slope of 0. the equation of the line parallel to the x-axis that passes through the point (2, –6) is x = 2. the equation of the line perpendicular to the y-axis that passes through the point (–5, 1) is y = 1.

Atotal of 766 tickets were sold for the school play. they were either adult tickets or student tickets. there were 66 more student tickets sold than adult tickets. how many adult tickets were sold?