Question

Suppose the two-variable equation

y = 600 + 10x

models the cost y of manufacturing x flash drives. If the company spends $9000 on manufacturing flash drives, then to find how many drives were manufactured, we solve the equation

Answer 1

The states of the variables must be equal to the equations of the whole equation, There is no relative extreme in this equation, so its derivative y = 10

Explanation:

`y = 600 + 10x = f(x) = 600 + 10x`

`y = 10`