Of the people who attended a concert, 3/5 live closer than 50 miles from the venue. Of the people that live closer than 50 miles from the venue, 0.3 spent more than $60 per ticket. A total of 4800 people attended the concert.

Which values for a and b will create infinitely many solutions for this system of equations? ax-y=8 2x+y=b

Which approach to the theory-and-research cycle does the following sequence reflect: (1) specific observations suggest generalizations, (2) generalizations produce a tentative theory, (3) the theory is tested through the formation of hypotheses, and (4) hypotheses may provide suggestions for additional observations?

If x = -2, then x 2-7x+10 equals a. 0 b.20 c.28