PLEASE SOMEONE HELP ME WITH THIS ITS DUE IN A COUPLE HOURS FOR trigonometry

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

When is g(x) = 0 for the function g(x) = 5.23x + 4?

Find the area of the region that is inside r=3cos(theta) and outside r=2-cos(theta). sketch the curves.