Which of the following situations could represent the equation shown below? 6.80 + 4.20x = 3.10x + 11.20 A. Manuel charged a one-time travel fee of $6.80 and $11.20 an hour to provide maintenance on equipment. Guillermo charged a travel fee of $4.20 and $3.10 an hour for the same job. At what time will Manuel and Guillermo earn the same amount of money? B. Carly had $6.80 in her piggy bank and planned on saving $4.20 a week. Her sister Casey had $11.20 in her piggy bank and plans on saving $3.10 a week. On which week will Carly and Casey have the same amount of money in their piggy banks? C. Jayson has $4.20 in his savings account and earns 6.8% interest every month on his savings. Yen has $3.10 in his savings account and earns 11.2% interest every month on his savings. When will Jayson and Yen have the same amount of money in their savings accounts? D. A catalpa tree is 6.8 centimeters tall and averages a gain in height of 4.2 centimeters every week. An empress tree is 3.1 centimeters tall and averages a gain in height of 11.2 centimeters every week. During which week will both trees have the same height?