Which of the following does not represent a proportional relationship? A. Zoe earns a base salary of $500 plus 3% commission

B. Dane drove 200 miles at a consistent speed for four hours

C. Water leaks from the faucet at a rate of 1/2 of a liter per hour

D. A recipe for biscuits calls for 3 cups of flour and 1 1/2 teaspoons of baking soda

Amountain climber starts a climb at an elevation of 453 feet above sea level at his first rest stop he has climbed 162 feet and by his second rest stop he has climbed another 207 feet its getting late in the day so the climber starts his way down if the climber desends 285 feet how much does he need to ascend or descend to return to the original starting point