exam Maths Puzzle Numerical Ability

i need to solve for y in this equation
thank you in advance

y+5-4y=-10

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exam Other Question

I would really appreciate it if someone would please help me with this problem. Solve A=P+ PRT FOR A, given that P=$300,r=7%, and t=4 years. The polynomial -4.9t^2+40t+20 represents the distance above the ground of an object thrown straigt up an initial height of 20 meters and with an initial speed of 40 meters per seco