Workout the value of 3x-4y when x=3and y=2

Acabinmaker buys 3.5 liters of oat varnish the varnish cost $4.95 per liter what is the total cost of 3.5 liters

The amount spent on food and drink by 20 customers is shown below what is the modal amount spent and the median? 40 25 8 36 18 15 24 27 43 9 12 19 22 34 31 20 26 19 17 28

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab