Help please...

x = 3y
4x + 5y = 34

solve for x and y

Help help

The amount spent on food and drink by 20 customers is shown below what is the modal amount spent ?

(05.03 mc) part a: explain why the x-coordinates of the points where the graphs of the equations y = 4x and y = 2x−2 intersect are the solutions of the equation 4x = 2x−2. (4 points) part b: make tables to find the solution to 4x = 2x−2. take the integer values of x between −3 and 3. (4 points) part c: how can you solve the equation 4x = 2x−2 graphically? (2 points)

To decrease an amount by 16% what single multiplier would you use