The pattern of the letter ‘E’ is ……?

Which of the following situation is a variable?

Which of the following situation refers a constant?

What should be added to $1+2x-3x^{2}1+2x-3x^2$ we will get $x^2-x-1x^2-x-1$?

Write an algebraic expression for “b is multiplied by x and 5 is added to the product”?

Write the statement for “16 + m”

“3m + 5” write the statement for the given algebraic expression.

Which of the following represents the variable?

Which of the following represents the constant?

Which of the following is a Monomial?