Which expressions are equivalent to the following?
30x^-5x-10

5(2x − 1)(3x + 2)
(10x − 5)(3x − 5)
5(2x + 1)(3x − 2)
5x(6x − x − 2)
3x(2x − 1) + 2(2x − 1)
-5(-6x2 + x + 2)

At dinner, 2/5 of the people had fish and 1/3 had chicken. if everyone else had lamb, what fraction of the people had lamb? and if 40 people had lamb , calculate the total number of people at the dinner.

Which is a graph of a proportional relationship?

Find the midpoint m of z1=(8+5i) and z2=(12+3i)