Which of the following can be represented by a positive integer? a.3 km South
b.8 floors down
c.2 meter below sea level
d.7 meters uphill​

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15

Which graph represents the equation y =4x

Milk and ice cream are mixed together for a recipe. the total volume of the mixture is 1 cup. if the milk contains 2% fat, the cream contains 18% fat ,and the mixture contains 6% fat ,how much cream is in the mixture