Use the diagram to complete the statements.
the angle of depression from point r to point s is
angle
the angle of elevation from point s to point r is angle
angle 2 is the angle of elevation from
angle 1 is the angle of

Write the point-slope form of the line passing through (2, -12) and parallel to y=3x.

Find the perimeter of the triangle with vertices  d(3, 4),  e(8, 7), and  f(5, 9). do not round before calculating the perimeter. after calculating the perimeter, round your answer to the nearest tenth.  

Acoffee shop orders at most $3,500 worth of coffee and tea. the shop needs to make a profit of at least $1,900 on the order. the possible combinations of coffee and tea for this order are given by this system of inequalities, where c = pounds of coffee and t = pounds of tea: 6c + 13t ≤ 3,500 3.50c + 4t ≥ 1,900 which graph's shaded region represents the possible combinations of coffee and tea for this order?