Mrs. gartland bought x number of shirts for the new members of record the class for x number of shirts including $3.99 shipping was $77.49. each shirt cost $12.25 there was no sales tax on this purchase which equation can be used to find x

6 shirts were bought

Step-by-step explanation:

12.25x + 3.99 = 77.49

subtract 3.99 from both sides

12.25x = 73.50

divide both sides by 12.25

x = 6

It is an imaginary root.

Step-by-step explanation:

When we rearrange the formula, we get 7x^2 - 5x + 1 = 0

When we put it in the quadratic formula: x = (−b±√b^2−4ac ) over 2a, we get x = 5 ± √-5^2-4(7)(1) over 2(7)

The discriminant is inside the square root. It is a -3. And because it is negative, we know that the root is an imaginary root.