How many subsets of {a, b, c, d, e, f, h, i} are there?​

If sin θ=24/25 and 0 less than or equal to θ less than or equal to π/2, find the exact value of tan 2θ. answers; a) -527/336 b) -336/527 c)7/24 d) 24/7

Select a graph that have an equation with a < 0

The volume of a sphere is increased by 6%. calculate the corresponding percentage increased in it area.