exam Maths Puzzle Numerical Ability

Find the following product

13.(y - 5)(y - 7)

a)2y - 35 b)2y^2 - 35 c)y^2 - 12y + 35 d) y^2 + 12y - 35

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exam Other Question

Debbi traveled by boat by 5 miles upstream to fish in her favorite spot. Because of the 4-mhp current, it took her 20 minutes longer to get there than to return. How fast will her boat go in still water? write an equation for each line.then grapgh the line.
through (2,1) and parallel to y=-3x+1