Question

HELP

Answer 1

Answer:

Predicted profit in year 8 is 17.14 millions of dollars.

Step-by-step explanation:

The quadratic equation

$y=-0.34x^2+4.43x+3.46$

predicts the profit y for a company in year x.

The profit in year 8 is the value of y at x=8:

$y(8)=-0.34\cdot 8^2+4.43\cdot 8+3.46\\ \\y(8)=-0.34\cdot 64+35.44+3.46\\ \\y(8)=-21.76+38.9\\ \\y(8)=17.14$

Hence, predicted profit in year 8 is 17.14 millions of dollars.

Answer 2

Answer:

$17.14

Step-by-step explanation:

Given : $y = - 0.34x^2 + 4.43x + 3.46$

To Find : Using the quadratic regression equation, what was the predicted profit in year 8

Solution :

$y = - 0.34x^2 + 4.43x + 3.46$

Where y is profit and x is year

Substitute x = 8

$y = -0.34(8)^2 + 4.43(8) + 3.46$

$y =17.14$

So, Option D is true

Hence the predicted profit in year 8 is $17.14