What is the value of the discriminant, b^2-4ac, for the quadratic equation 0=-2x

Two florida panthers were weighed. one weighs 6x+21 pounds and the two together weigh 14x+11 pounds how much does he other panther weigh alone

Identify the initial amount a and the growth factor b in the exponential function. a(x)=680*4.3^x

Joanie wrote a letter that was 1 1/4 pages long. katie wrote a letter that was 3/4 page shorter then joagies letter. how long was katies letter