What is the value of the expression when y=2

Leo has b boxes of pencils. each box contains 6 pencils. he has a total of 42 pencils. the equation that represents this situation the value of b that makes the equation true the first one is b+6=42,6b=42,b=42+6,or 42b=6 the second one are 7,836 48

What is the effect on the graph of the function f(x)=x when f(x) is replaced with -f(x)+4

What is always true when two whole numbers are subtracted?