Classify the variable as discrete or continuous. weights of backpacks of first graders on a school bus

Hell . what are the solutions to `10x^2 - 38x - 8 = 0`? is this when i find the factors and use the numbers within the factors to determine the zeros? i hope that made sense lol

Solve each equation using the quadratic formula. find the exact solutions. 6n^2 + 4n - 11

What adds to be the bottom number but also multiplies to be the top number with 8 on the bottom and 15 on top