Wayne needs to drive 470 miles to reach Milwaukee. Suppose he drives at a constant speed of 50 miles per hour. Which function represents Wayne's distance in miles from Milwaukee in terms of the number of hours he drives? A. y = 420x B. y = 470 + 50x C. y = 50 ? 470x D. y = 50 + 470x E. y = 470 ? 50x