Each house will be built in 5\6 of an acre. how much land would be needed for 7 houses?

Isabelle is mixing red and blue paint to make purple paint she adds 3/10 of a fluid ounce of red to 12/25 of a fluid ounce of blue to make 1 1/30 fluid ounces of purple how many fluid ounces of red paint ounces of red paint will she need to make 3 fluid ounces of purple paint

Factor 15x^3 - 5x^2 +6x-2 by grouping. what is the resulting expression

Could someone me with this, ? : )