Determine whether each expression is equivalent to 10t^2+2t-3

Consider the function represented by the equation 1/2 j + 1/4 k equals 3 which shows the equation written in function notation with j as the independent variable

Sanjay solved the equation below. which property did he use to determine that 7x+42=42 is equivalent to 7(x+6)=42 7x+42=42 7x=0 x=0

Which statement best describes how to determine whether f(x) = x squared- x +8 is an even function ?