The sum of nine times a number and fifteen is less than or equal to the sum of twenty four and ten times the number

How many sides does a regular polygon have if each exterior angle measures 72a.3b.4c.5d.6

Varies inversely with x. if y=8.5 when x=-1 find x when y=-1

Alina fully simplifies this polynomial and then writes it in standard form. xy2 – 2x2y + 3y3 – 6x2y + 4xy2 if alina wrote the last term as 3y3, which must be the first term of her polynomial in standard form? xy2 5xy2 –8x2y –2x2y