exam Maths Puzzle Numerical Ability

What are the x-intercepts of the graph of y=-xsquared-6x+40

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(x^2 + 6x) - (2x^2 -3) A LAWYER BILLS HER CLIENT $250 PER HOUR OF SERVICE. IF A CLIENTS CASE REQUIRES 47 HOURS TO COMPLETE, USE PROPORTION TO CALCULATE HOW MUCH THE CLIENT WILL OWE THE LAWYER(INCLUDE TAX).