Surface area of triangular prism

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

The sum of the squares of two numbers is 8 . the product of the two numbers is 4. find the numbers.

Mason and christian go to the movie theater and purchase refreshments for their friends. mason spends a total of $45.75 on 3 bags of popcorn and 6 drinks. christian spends a total of $71.50 on 6 bags of popcorn and 4 drinks. write a system of equations that can be used to find the price of one bag of popcorn and the price of one drink. using these equations, determine and state the price of a drink, to the nearest cent.