C...to show this, interchange letters: x = (y+1)/(y-1)xy-x = y + 1xy - y) = x + 1y(x-1) = x+1y = (x+1)/(x-1) ⇐ this is f-1(x) and it's identical to f(x). Note: <span>the equal sign is missing in the definitions of the functions c. & d.</span>
<u><em>Answer is in bold</em></u>
Harry can first substitute 30 for t. He can then multiply
by 30 to get a product of 10. Since 15 is equal to 30 × 1/2, Harry's solution is not correct.
Hope this helps :)
Have a great day!
Answer:

Step-by-step explanation:
1.
2 yellow marables of 10 all marables

2.
1 yellow marable of 9 all marables


C. negative exponents always go at the bottom
Answer:
3
Step-by-step explanation: