exam Maths Puzzle Numerical Ability

can you help me with this problem?
x2+7x+10
thank yu

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exam Other Question

A boat travels 45 mi upstream (against the current) in 5h. the boat travels the same distance downstream 3 h. what is the rate of the boat in still water? what is the rate of the current? Evaluate: 1n e^(-9x).

thank you