Choose the linear inequality that describes the graph. the gray area represents the shaded region.

a: 3x – 7y < –21

b: 3x + 7y < –21

c: 3x – 7y < 21

d: 3x – 7y > –21

What value of x is in the solution set of 4x - 12 s 16 + 8x? -10 -9 -8 -7

In the figure below, ∠dec ≅ ∠dce, ∠b ≅ ∠f, and segment df is congruent to segment bd. point c is the point of intersection between segment ag and segment bd, while point e is the point of intersection between segment ag and segment df. the figure shows a polygon comprised of three triangles, abc, dec, and gfe. prove δabc ≅ δgfe.

Gables properties corp. is leasing office building with an area of 49b^2+70b+25. what is the shape of the building? a) rectangle b) square