Simplify (7x  + 2 + 8x4) – (2x  – 5 – 8x4) + (3x  + 5x4)                a.  21x4  + 8x  + 7      b.  15x4  + 14x  + 7      c.  15x4  + 19x  + 7      d.  21x4  + 14x  + 7. the the answer is c. 15x4 + 19x + 7

In the geometric progression –3, 12, −48… what term is 3,072?

Igure 1 and figure 2 are two congruent parallelograms drawn on a coordinate grid as shown below: 4 quadrant coordinate grid showing two parallelograms. figure 1 has vertices at negative 5, 2 and negative 3, 4 and negative 4, 7 and negative 6, 5. figure 2 has vertices at 5, negative 2 and 7, negative 4 and 6, negative 7 and 4, negative 5. which two transformations can map figure 1 onto figure 2? reflection across the y-axis, followed by reflection across x-axis reflection across the x-axis, followed by reflection across y-axis reflection across the x-axis, followed by translation 10 units right reflection across the y-axis, followed by translation 5 units down

Solve the system of equations. x=-2y+1 and x+2y=9. show work