PLEASE HELP ASAP! Find the slope of the line, and find the value of a, and b

In a certain pentagon, the interior angles are a,b,c,d,e where a,b,c,d,e are integers strictly less than 180. ("strictly less than 180" means they are "less than and not equal to" 180.) if the median of the interior angles is 61 and there is only one mode, then what are the degree measures of all five angles?

Explain how you can find the missing fraction in 3 4/5 / (blank) 2 5/7. then find the missing fraction.

The zoo collects $9.60 for every 24 tickets sold. how much will be collected for 400 tickets?