book Maths Puzzle Numerical Ability

Evaluate the function y=3x to the 2nd power+ 5x + 1 when

x= -1

x= 0

x= 1

x= 2

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book Other Question

a boat travels 80km upstream and then returns to its starting point. The entire trip takes 3.6h. if the speed of the current is 10km/h, determine the speed of the boat in still water. Find the height of a right triangle whose base measures 10 cm and whose hypotenuse measures square root of 221 cm.