For the following system, use the second equation to make a substitution for y in the first equation. 3x + y = 1 y + 4 = 5x what is the resulting equation? a. 3x + 5x - 4 = 1 b. 3x + 4 - 5x = 1 c. 3x + 5x + 4 = 1

You are cycling around europe with friends. you book into a hostel and you ask the owner what the ratio of men to women is currently staying there. there are 24 men and 6 women. what is the ratio of men to women in its simplest form?

What is the perimeter of a rectangular building that is 80 feet wide and 140 feet deep?

Jack did 3/5 of all problems on his weekend homework before sunday. on sunday he solved 1/3 of what was left and the last 4 problems. how many problems were assigned for the weekend?