Question

-.- what does it mean when you see something like this....0.05x + 0.08y = 60; x + y = 1000

i want to know what the semi colon is for

Answer 1

Its just telling you that the x + y = 1000 is another equation.
Its a linear way to write a system of equations.
So all the information they give you is:
\[0.05x + 0.08y = 60\]\[x + y = 1000\]
And they want you to solve for x and y.
Are you having trouble solving it? Or can you take it from there?

Answer 2

ohh ok thanks!!!