My brain operates on one brain cell I need help

Julia is going for a walk through the neighborhood. what unit of measure is most appropriate to describe the distance she walks?

Find the value of x that will make l ll m

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. when the check comes, it says they also need to pay $3.99 in sales tax. what percentage of the subtotal is the sales tax