If pablo works 9 hours and receives $800 what would he revive for working 5 hours?

Is this a polynomial function? i need to know asap

Jada has a meal in a restaurant she adds up the prices listed on the menu for everything they ordered and gets a subtotal of $42.00. after tax the total is 45.99. what percentage of the subtotal is the total?

What is the solution to the equation below? 3/x-2+6=square root x-2 +8