Which of the following cannot be solved using the quadratic formula?

A.

Step-by-step explanation:

We know that,

The quadratic formula is used to find the solution of a quadratic equation i.e. an equation of degree 2.

Now, in option A, we have,

i.e. i.e.

So, the final equation is not a quadratic equation but it is a linear equation.

Hence, for this equation, we cannot use the quadratic formula.

answer: c

because if you look at the chart you can see a pattern and compare it to the question he simplify out your

but i think the formula is f(x)=6x

a. she will receive a refund of $278.

step-by-step explanation: