Robert earns $300 each week. what equation shows the relationship between salary per week (s), number of weeks worked (w), and total income (t).

t = 300w

t = total income

w = number of weeks worked

The maximum price per share is $250 and it happens after 10 days of trading.

Step-by-step explanation:

The performance of a stock is modeled by the function:

Where d is the number of days of trading and P is the price per share.

To find the maximum price, we use the first derivative:

Equating to zero:

-5d+50=0

Solving for d:

-5d = -50

d = -50/(-5) = 10

d = 10

The price for d=10 is:

The maximum price per share is $250 and it happens after 10 days of trading.