exam Maths Puzzle Numerical Ability

Can someone help me "Use The Distributive Property to write an equivalent variable expression" for this question please??

(5 - a)(-7)

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exam Other Question

How many 4-inches by 8-inch bricks are needed to build a walk 6ft. wide and 24 feet long? Hey, I'm having some major difficulty with these couple problems from my homeschool work... Thank you so much!! :]

1. What is the equation of the perpindicular bisector of the