1. Determine which of the following are statements:
(a) The universe is 1 billion years old.
(b) What a beautiful morning!
(c) Mathematics is an important part of our culture.
(d) He is a gentleman and a scholar.
(e) All poets are men.
2. Write each of the following statements in "if . . . . . , then ....." format:
(a) That the lines are perpendicular implies that their slopes are negative reciprocals of each other.
(b) Goldfish can live in a fishbowl only if the water is aerated.
(c) Jane uses her umbrella if it rains.
(d) Only if Morris eats all of his food does Sally give him a treat?