What two numbers multiply to get 100 and add to 29

What is the first step of an indirect proof of a number that is divisible by two

Find the zero function by factoring (try to show work) h(x)=-x^2-6x-9

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