10 POINTS! Please help I'm desperate :( A boat travels 42 miles upstream in 3 hours looking for a lost diver. It then travels downstream 70 miles in 2 hours.
Write a system to represent the situation. Then find the speed of the boat and the speed of the current. Use b for boat and c for current.
(it is a System of Equations problem)

Nnnnneeedd 1.find the residual if you know the actual number is 5.2 and the predicted value is 4.8

Cameron indoor stadium at duke university is one of the most revered sites in all of college basketball, as well as in all of sports period. duke’s men’s and women’s basketball programs have attained quite a few wins in the building over the last seventy years. cameron indoor stadium is capable of seating 9,460 people. for each game, the amount of money that the duke blue devils’ athletic program brings in as revenue is a function of the number of people in attendance. if each ticket costs $45.50, find the domain and range of this function.

Solutions for 2x+7 less than or equal to 3x-5