exam Maths Puzzle Numerical Ability

use the FOIL to multiply:
(8x-1)(2x+5)

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exam Other Question

A number is divided into two parts in the ratio 7:4, If the larger part is 21, find the number. Graph the following rational function. give equations for vertical,horizontal and oblique asymptotes if any..
Label completely!

x
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-x^2 + 4