Would you please explain the below questions?

The following table depicts the number of grapes that can be picked in an hour with varying amounts of labor. Assuming the price of grapes is $2.25 per flat, calculate total revenue and marginal revenue product (MRP) and answer one question about hiring. Instructions: Enter your responses as whole numbers. Indicate negative responses with a (-) negative sign. Number of Pickers Output of Grapes Total Revenue Marginal Revenue Product (per hour) (in flats) ($ per hour) ($ per hour) C 0 0 10 28 43 54 61 64 65 61 How many pickers will be hired if the going wage rate is $15.75 per hour? pickers