Question

At a pottery factory, fuel consumption for heating the kilns varies with the size of the order being fired. In the past, the company recorded the figures in the table.

A.Find an equation of the form y=Ax²+bx+c whose graph contains the three points corresponding to the data in the table.

B.  How many platters should be fired at one time in order to minimize the fuel cost per​ platter? What is the minimum fuel cost per platter.

5	3.07
7	2.75
9	2.51

A.  The coefficients of the equation are A =? , B=? and C =?

(Type an integer or decimal rounded to two decimal places as​ needed.)

B.  In order to minimize the fuel cost per platter, ____ platters should be fired at one time. The minimum fuel cost per platter is $___?

Answer 1