There were 300 people at a dance. tickets cost $5 for visitors and $3 for students. the total tickets sales were $1100. how many visitors and how many students attended the dance?

And employees salary increase by $4500 which represents a 15% raise what is the employees new salary

For the rule of 78, for a 12-month period, the last term in the sequence is 12 and the series sums to 78. for an 10 month period, the last term is and the series sum is . for a 15 month period, the last term is and the series sum is . for a 20 month period, the last term is and the series sum is

I’m really confused and need to learn this