A pattern of shaded and unshaded squares is shown below: 1. Find a formula for or describe in words the number of shaded squares in the n" figure.
2. Find the number of shaded squares in the 50th figure.

Danny draws a transversal, t, on two parallel lines ab and cd, as shown below: he makes the following table to prove that the alternate interior angles are equal: which is the missing justification? (6 points) corresponding angles formed by a transversal on parallel lines are supplementary. corresponding angles formed by a transversal on parallel lines are congruent. co-interior angles formed by a transversal on parallel lines are congruent. co-exterior angles formed by a transversal on parallel lines are congruent.

What is the solution to the inequality

Simplify the expression. enter the correct answer.