P ​$​700, r 5​%, t ​8 years; compounded quarterly

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)

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. after tax the total is 45.99. what percentage of the subtotal is the total?

What is the slope of the line that contains the points (-2,1) and (0,-3)