Which equation represents the data in the graph shown? y = -2x
y= 2x + 3
y= -2x +3
y= -3x - 3

x y
0 3
1 1
2 -1

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

Which expression is not a polynomial?

An investment decreases in value by 30% in the first year and decreases by 40% in the second year. what is the percent decrease in percentage in the investment after two years