Which property of equality is used to solve -9.5=x/1.6

Arestaurant chef made 1 1/2 jars of pasta sauce. each serving of pasta requires 1/2 of a jar of sauce. how many servings of pasta will the chef be bale to prepare using the sauce?

The table shown below gives the approximate enrollment at the university of michigan every fifty years. how many more students were enrolled at the university of michigan in 1950 than in 1900?

An isosceles trapezoid was broken into a rectangle and two triangles. what are the base and height of one of the triangles?