Which system of linear equations has the ordered pair (4, –5) as a solution? 2 x minus 5 y = negative 30 and 7 x + 4 y = negative 19 6 x minus y = negative 29 and 8 x + 3 y = negative 17 3 x minus 2 y = 22 and 2 x + 9 y = negative 37 5 x minus 6 y = 49 and x + 8 y = negative 27

Create a graph for the demand for starfish using the following data table: quantity/price of starfish quantity (x axis) of starfish in dozens price (y axis) of starfish per dozen 0 8 2 6 3 5 5 2 7 1 9 0 is the relationship between the price of starfish and the quantity demanded inverse or direct? why? how many dozens of starfish are demanded at a price of five? calculate the slope of the line between the prices of 6 (quantity of 2) and 1 (quantity of 7) per dozen. describe the line when there is a direct relationship between price and quantity.

How can you use synthetic substitution to tell whether a given binomial is a factor of a polynomial?

If f(x)=3 over x+2 - square root x-3 then f(7)=