For which system of inequalities is (3,-7) a solution?

a.
x + y < -4
3x + 2y < -5
b.
x + y ≤ -4
3x + 2y < -5
c.
x + y < -4
3x + 2y ≤ -5
d.
x + y ≤ -4
3x + 2y ≤ -5

Will used 20 colored tiles to make a design in art class. 5/20 of his tiles were red. what is an equivalent fraction for the red tiles?

Read the equations in the table below. then drag a description of the situation and a table to represent each equation. indicate whether each of the relationships is proportional or non-proportional.

The price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?