exam Maths Puzzle Numerical Ability

This is an extra credit question for my Honors Geometry Class-- I am in 8th grade

If a coin is flipped 4 times, find P (exactly 3 heads).

I do not know what my teacher is looking for- PLEASE HELP

THIS IS NOT A TEXTBOOK QUESTION!

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exam Other Question

I need help please...I dont understand....it reads as follows:
L varies inversely as W. Find the constant of variation if L=40 and w=50
Can you help me with this equation?

An executive in an engineering firm earns a monthly salary plus a Christmas bonus of $8,700. If she earns a total of $97,000 per year, what is her monthly salary?