exam Maths Puzzle Numerical Ability

Can you help me with this trigonometry problem?

Give 5 keypoints and sketch the graphs of
y=3Sin (x-pie/3)

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exam Other Question

Can anyone help? Thank you so much

Solve x squar+3x+3=0 by using the Quadratic Formula (eg. 6, I)

I use College Algebra Book ISBN-13 978-0-618-77629-0
is a parrallelogram a rectangle-always,never,sometimes?