exam Maths Puzzle Numerical Ability

this is a quadratic word problems using quadratic relations, not the quadratic formula

When an arrow is fired upwards its heigh h meters above the ground t seconds after it was

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exam Other Question

1 1/15 + 3 3/10 - 2 4/5 = ??
Can someone help me with this please, I really have no idea where to start.
Thank you.
Solve for x: 3x^2+5x-7=x^2+8x+28