Do not hyphenate connected words that function as adjectives if they occur _____________ the word they modify

Which statement is not true about correlation matrices?

A) Usually only the lower portion of the matrix is considered. B) The diagonal elements all equal 0. C) A correlation matrix indicates the coefficient of correlation between each pair of variables. D) The upper triangular portion of the matrix is a mirror image of the lower triangular portion.

Which of the following is an example of a routine business request?

A) Asking your manager to grant you the leave which he had cancelled earlier B) Explaining a travel expense to the accounting department C) Persuading a client to postpone a project so that your company can take the job D) Asking your team leader to extend the project deadline E) Persuading your team leader to let you work in a flexible schedule