exam Maths Puzzle Numerical Ability

Simplify. Write each answer in standard form.

(7y^2 - 3y + 4y) + (8y^2 + 3y^2 + 4y)

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exam Other Question

9. 4t = 2(7t + 15)?

Can someone help with this equation?
Sketch the graph of the function- y= 3/x+2 +4