Respuesta :
Answer:
$23
Step-by-step explanation:
We will use a quadratic regression to solve this.
Using a graphing calculator, put the number of calculators into the first list (x) and the cost to produce into the second list (y).
Next we run the quadratic (x^2) regression. Doing this gives us an equation in the form
y = ax²+bx+c. The values we are given for a, b and c are
a = 8.9999999999; b = -4.999999999999; c = 18.999999999
These can be rounded to a = 9, b = -5 and c = 19. This gives us the equation
y = 9x²-5x+19
Substituting 1 in place of x, we have
y = 9(1²)-5(1)+19 = 9(1)-5+19 = 9-5+19 = 4+19 = 23