Find the vertex v and the x-intercepts x^1 and x^2 of the quadratic function f(x) = 2x^2 - 8x.

1) did you try desmos?
2)you have to factor it. 2x^2-8x, you can remove 2x from it so it becomes x^2-4 which is a differnce of sqaures and factors out to (x-4)(x+4) so x= =/- 4. then from there to find the vertex you can eye ball it in this one because the x intercepts are nice adn centered. the x value of the vertex is going to be 0 because is right in between the x intercepts. then to find the y value, just put 0 into the eqation.

The interest earned will be $2362.92.

Step-by-step explanation:

The compound interest amount function is A = P(1 + r/n)^(nt), where

P is the original principal, r is the interest rate as a decimal fraction, n is the number of compounding periods per year, and t is the number of years.

In this particular problem, the formula becomes:

A = $3979(1 + 0.12/2)^(2*4), where 2 represents the number of compounding periods if compounding occurs semiannually.

Evaluating this expression, we get:

A = $3979(1+0.06)^8, or

A = $3979(1.06)^8, or

A = $3979(1.594), or

A = $6341.92 (rounded off to the nearest cent)

The interest will be $6341.92 less the original principal, $3979:

I = $6341.92 - $3979 = $2362.92