exam Maths Puzzle Numerical Ability

Formulate three word problems from day to day life that can be translated to quadratic equation.

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exam Other Question

Plot the graph of the following function:
Help I am having a huge problem figuring this one out. Thanks so much in advance.

f(x)= log3x
2 triangles are similar
Triangle RTS where rt=4.2 and st=6.0 do not know rs
Triangle JLK where lk=8

what is the length of JL