Question

How would you write the equation for the following sentence: 3 hot dogs and 4 sodas cost $20. * Do not put spaces or dollar signs in your answer. Your answer

Answer 1

3h + 4s = 20

1) Let's write an equation for that, calling hot dogs by h and sodas by s.

3h + 4s = 20

Note that in this equation we are relating prices, of hot dogs and sodas and the total cost of them. Similar reasoning is used to set a linear system of equations.