Find the distance between (0, 10) and (12.1)

Take as if these points are on a line segment Ab

Dab = square root of ( xa - xb )^2 + ( ya - yb)^2

square root of (0 - 12 ) ^2 + (10 - 1 )^2

square root of (-12)^2 + (9)^2

square root of 144 + 81

square root of 225

15 unit

answer: she must produce at least 9,000 windows in order to make a profit of $48,000

explanation:

48,000 - 12,000 = 36,000

36,000/4 = 9,000

the answer is n