What are the domain and range of the function {(3, 1), (5, –1), (9, –1), (2, 7), (–4, 1)}?

a.
domain: {3, 5, 9, 2 }; range: {1, 7}

b.
domain: {1, –1, 7}; range: {3, 5, 9, 2, –4}

c.
domain: {3, 5, 9, 2, –4}; range: {1, –1, 7}

d.
domain: {1, 7}; range: {3, 5, 9, 2 }

The dance committee of pine bluff middle school earns $72 from a bake sale and will earn $4 for each ticket they sell to the spring fling dance. the dance will cost $400 write an inequality to determine the number, t of tickets the committee could sell to have money left over after they pay for this year's dance. what is the solution set of the inequality?