The function f(x)= -2x2+220x-750 gives the daily profit of a company if they manufacture x items. The company can manufacture 50, 55, or 60 items per day. How many items should be manufactured to make the most daily profit?

fx + 2x2 - 220x + 750 = 0

1.4

2.3

step-by-step explanation:

the formula for the constant of variation is

y= kx

divide each side by x

y/x =kx/x

y/x =k

we know a and y

1.   y/x = k

4/1 =4

check the other values to make sure they are the same

8/2 = 4   12/3 =4   and 16/4 =4  

the constant of variation is 4

2.   y/x = k

3/1 =3

check the other values to make sure they are the same

6/2 = 3   9/3 =3   and 12/4 =3  

the constant of variation is 3

yes

step-by-step explanation: