Solve using the quadratic formula

1) y=3x^2-x-6

2) y=-5x^2+7x+3

Step-by-step explanation:

Identify the coefficients of the x terms.  They are a = -5, b = 7 and c = 3.

The discriminant (the part of the quadratic formula that's under the square root operator) is then b^2 - 4ac, or 7^2 - 4(-5)(3), or 49 + 60, or 109.  Because this is positive, we know that  2) y=-5x^2+7x+3  has two real, unequal solutions.

By the quadratic formula, we have:

      -7 ± √discriminant

x = or:

                  2(-5)

      -7 ± √109

x =

            -10

kaahe btau

a. (14,375+570)(5.3) b. 158,417$

step-by-step explanation:

a. you are basically just setting up the equation. f= amount of debt hence 14,375. g= how much she is borrowing from her parents weekly hence 570 and t= the interest on her debt. creating the equation.

b.   14,375+570= 14,945

      14,945 x 5.3 = 79,208.5

      79,208.5 x 2(years) = 158,417(answer)