How to factor quadratics with other leading coefficients

Create and solve a linear equation that represents the model, where squares and triangles are shown evenly balanced on a balance beam. assume the weight of a square is 1 unit and the weight of a triangle is unknown.

One card is dealt from a 52 card deck. find the probability that the dealt card is a 4 or a black 7

How many $20 bills do you need to have to make $280