Can y’all help, its okay if not..

What is the area of triangle abc if a = 8, b = 11, and c = 15?

Identify the conclusion of the conditional statement. if you live in phoenix, then you live in arizona.

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