Solve for a - 4a = 20
1 answer:
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Let's say 1000 dollars was spent on all of these. That would mean 170 dollars and 240 were spent on food and entertainment respectivly. If we want to see how much of the total cost was spent on these things, we would have to add them and divide them by 1000, so:
The graph of 
is shown in the graph below.
The graph is of ∩-shape when the constant
of the quadratic equation 
is negative
The graph is of ∩-shape when the constant