Book Maths Puzzle Time and Work

high school graduating class is made up of 466 students. There are 212 more girls than boys. How many boys are in the class?

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Book Other Question

Graph the following equations

y=2x-3

x+2y=4

1/2x+2=y

y=x(squared)-5

x=1-y(squard)

x=y(squard)+2

2x+3y=0
y=9-x (squard)

y=square root of x-4 I need help showing my daughter how to do problems like 6x to the 2 power+53x-50=-12