The stem-and-leaf display below gives the fuel efficiencies (In miles per gallon) for a sample of 17 new cars. Use the display to answer the questions that follow. Fuel efficiency (miles per gallon) 124 2369999 3 33677 4 1236 Key: 112 means a fuel efficiency of 12 miles per gallon. (a) What is the highest fuel efficiency in the 30s? 1 (b) What is the lowest fuel efficiency in the sample overall? (c) How many cars in the sample have fuel efficiencies in the 40s? 1​