Please help me figure this out!! Write "four hundred dollars and seventy-two cents" as a fraction (and then reduce)

After applying the composition r0.90 ry to rs what are the coordinates of r' and s'? a.r'(–3, 1),  s'(–3, 5)b.r'(–1, 3),  s'(–5, 3)c.r'(1, 3),  s'(5, 3)d.r'(5, 3),  s'(1, 3)

Find all the values of x that make 0.1x + 0.25(102 - x) < 17.10 true.

Which point on the x-axis lies on the line that passes through point c and is parallel to lino ab?