Find the percentage change from 30 to 39

Write a story that matches with the expression 42x-5 pls hurry

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?

Drag the tiles to the correct boxes to complete the pairs. label each function. as even , odd, or neither.