How do you find the rate of change of a table

Plot the points (0,6), (3,15.8), and (9.5,0) using the graphing tool, and find the function

Astore ordered 750 candles a total wholesale cost of $7910.20. the soy candles cosy $12.17 each and thespecialty candles cost $9.58each. how many of each were bought?

Rewrite the following quadratic functions in intercept or factored form. show your work. y = x^2 + 7x + 10