Simplify: 6x3y2 (4x4 − 3xy)

a .24x7y2 − 18x4y3
b.24x12y2 − 18x4y3
c. 10x7y2 − 9x4y3
d. 24x7y2 − 18x3y3
i think it's b but i am not really sure .

The number of fish in a lake can be modeled by the exponential regression equation y=14.08 x 2.08^x where x represents the year

Aye asap pls ! markin da brainiest too ! btw da step choices are all add, distribute, divide, n subtract

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