It's dependent on the context. A book may ask you to find the f'(x) of a function and you may have to use a u sub in your problem which requires you to find the dy/dx of what you substitute. So in this case both would be used.
1. She got 9 questions wrong.
2. I believe the total is $44.80
-2x^2=-15-5
-2x^2=-10
x^2=-5
X≠R i am not quite sure but...hope it helps :)
Answer:
7(x - 8)
Step-by-step explanation:
times means multiplication
difference means subtraction
7 times the difference of x and 8 -> 7 * (x - 8) -> 7(x - 8)
Simplify if needed.
7(x - 8)
~Distribute
2x - 56
Best of Luck!
