Question

Skateboard Revenue: A skateboard shop sells about 50 skateboards per week for the price advertised. For each $1 decrease in price, about 1 more skateboard per week is sold. The shop's revenue can be modeled by y=(70-x) (50+x). Use vertex form to find how the shop can maximize weekly revenue.
[I can get this into vertex form, but I'm not understanding how to read the vertex form of the equation to answer the question]

Answer 1

Answer:

fds

Step-by-step explanation:

Answer 2

Well, the form $ax^2+bx+c$ gives the maximum (if a<0) at coordinates $(\frac{-b}{2a};\frac{-\Delta}{4a})$, where $\Delta=b^2-4ac$. If a>0, the same formula gives the minimum (there's no maximum)