Simplify.

−3+80÷8−5⋅(−1) plz help

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.

What is the standard form of -5x^2+2x^4-11+x^3+3x

What is an alternate exterior angle