What are the values of a, b, and c in the quadratic equation 0=5x-4x^2-2

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

Shannon drove for 540 minutes. if she traveled 65 miles per hour, how many total miles did she travel?

Meg constructed triangle poq and then used a compass and straightedge to accurately construct line segment os, as shown in the figure below, which could be the measures of angles pos and angle poq?