exam Maths Puzzle Numerical Ability

Write the equation of a line whose slope is 6 and whose y intercept is -3.

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exam Other Question

simplify

5 times the square root of m^2p^7 times 3 times the square root of m^5p
A river has a steady current. A boat travels 30 mph over still water. If a trip 85 miles downstream and back takes 10 hours, then what is the speed of the current?