(18 - 3)2 = ?
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help me pls ty

The diameter of a circular chip is doubled to use in a new board game. the area of the new chip will be

Arestaurant offers delivery for their pizzas. the total cost the customer pays is the price of the pizzas, plus a delivery fee. one customer pays $23 to have 2 pizzas delivered. another customer pays $59 for 6 pizzas. how many pizzas are delivered to a customer who pays $86?

If f(x)=3 over x+2 - square root x-3 then f(7)=