Lines intersect at a point, forming ∠1 , ∠2 , ∠3 , and ∠4 . ∠1 and ∠2 are supplementary angles. ∠2 and ∠4 are vertical angles. m∠1=90° what is the measure of ∠4 ?   need the answer asap. you guys who do answer.

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?