exam Maths Puzzle Numerical Ability

I have tried to work this problem.
(-2x) 3rd power times (-x squared)
I got -2x times -2x times -2x times x squared=-8x fifth power
Is that correct?

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exam Other Question
Dad is 4 times as old as his son Jim. In ten years, Dads age will be twenty years more than twice Jims age. Find thier age now?



thank you I have 2 questions.

1. I need the value of x for this problem:
y=-[SQRT(4 - 3x)] + 6


2. The graph of y=6 - [SQRT(4 - 3x)] contains which point?