exam Maths Puzzle Numerical Ability

on my home work it says simplify 5x to the power of -4 how do i do that?

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exam Other Question

Could someone help me on this problem?

I need to rewrite the equation 4x- 10y = 11 as a function of x.

Thank you,
Sher give a counterexample that demonstrates that the converse of the statement is false:
If Terry lives in Tampa, then she lives in Florida.