All you have to do is times 15.5 with 9.48 and you get your answer witch is $146.94
4 3/8 = (4*8 + 3) / 8 = 35/8
3 1/4 = (4*3 + 1) / 4 = 13/4
Subtract 249 from 417 and you’ll get 168 then divide 168 by 2 and you’ll then get 84
So train b is 84 tons
Train A is 249+84 so 333
Step-by-step explanation:
Ooh ape--x I just did this a few weeks ago. To find the inverse, you need to reverse the process. So, instead of adding subtract, and instead of dividing, multiply. It's so easy once you get it.
Start by substituting y for f(x), and then switching x and y, and once you've solved for y I believe, you write f^-1(x) in y's place.
