What is the simplified expression for –3cd – d(2c – 4) – 4d?

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.

Maria walks a round trip of 0.75 mile to school every day.how many miles will she walk in 4.5 days

The vertex of this parabola is at (-2,-3). when the x-value is -1, the y-value is -5. what is the coefficient of the squared expression in the parabola's equation?