Aand b are two events. p(a)=0.25 , p(b)=0.5 and p(a and b)=0.15 . what is the value of p(a or b) ? 0.15 0.25 0.60 0.90

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?