exam Maths Puzzle Numerical Ability

Find the slope of any line perpendicular to the line through points (0, 5) and
(-3,-4).

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exam Other Question

Evaluate

-c2nd power - 5(c 0 power + d)2nd power if c = -3 and d = 4 Ed and Dave are going to divide a cash prize of $14,000 in a ratio of 2 to 5. How much will Dave receive?
The answer I got is $4,000.
Is this right?