exam Maths Puzzle Numerical Ability

Business and finance. Kevin earned $165 interest for 1 year on an investment of
$1500. At the same rate, what amount of interest would be earned by an investment of $2500?

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I need help with this problem:
|-4x| + |-5| < 1</PRE>
Graph the function and state the domain and range.
g(x)=x^2-2x-15

Can you please also show the graph?