Fiona bought some socks that cost $4.95 for each pair and some belts that cost $6.55 each. Fiona spent $27.95 in all. Let a represent the number of pairs of socks purchased and b the number of belts purchased. Which equation models the situation? a + b = 11.50 a + b = 27.95 4.95a + 6.55b = 27.95 6.55a + 4.95b = 27.95