Ayuda por favor es para un examen​

Multiply and simplify. 2x2y3z2 · 4xy4x2 how to do?

Consider the linear function that is represented by the equation y= 4x+5

Afitness center has 2 membership plans one has a low dollar sign up fee of 15 dollars and costs 38 dollars per month to join. a second plan has a higher sign up fee of 78 dollars but a lower monthly fee of 31 dollars for what number of days of the month is the coat the same