Y is inversely proportional to a^3 when a=2 , y=10 a is directly proportional to x when x=4 , a=20

Find the formula for y in terms of x.
Give your answer in its simplest form.

Write the following as a base and exponent

Plz determine whether the polynomial is a difference of squares and if it is, factor it. y2 – 196 is a difference of squares: (y + 14)2 is a difference of squares: (y – 14)2 is a difference of squares: (y + 14)(y – 14) is not a difference of squares

In δabc, m∠acb = 90°, cd ⊥ ab and m∠acd = 45°. find: a find cd, if bc = 3 in