2D Plot of a one variable equation?

Questions
1

Hello,

i am working on a fairly simple 2D Plot, and I don’t inderstand why it is not showing.
Can someone help me?

plot.PNG
plot.PNG799×437 7.75 KB

2

The proper syntax is as follows, without the square brackets around x. Square brackets enclose argument(s) to function(s).

Plot[-0.000044 x^2 + 0.03 x + 1000, {x, 0, 5000}, PlotRange -> {{0, 5000}, {1500, 0}}]