👉🏼A book weighs 200g to the nearest 10g. What is the upper bound of the total weight of 20 books?

👈🏼Simplify $\frac {(6x^{\frac{1}{2}})^3}{2x}$

👆🏼A line has a gradient of and passes through the point (3,10). What is its equation? Write an equation for another line that is perpendicular to line 1.

👇🏼A is directly proportional to B squared. When A=500, B=10. Find A when B=20.

🖐🏼Calculate