The first and the third one
First you take -3 and add itself to get 6x = -48. Then you simply divide 6 into -48 and you get x = -8
The first problem
x(x+3)=28
x^2+3x=28
x=4
The second problem
x(x-4)=32
x^2-4x-32=0
x=8
The answer would be D. 200 - 20d.
This is because the question asks for pages left after reading for "d" (however many) hours. Since the book has 200 books, you'd subtract from that number since it's the "starting number" of pages. If he reads 20 pages per hour, you would multiply those together to get how many he has read, then subtract that number from 200, to get the amount of pages left.
I hope this helps!
The total amount of the car loan, plus taxes and fees is called: A- Principal.
A principal can be defined as an amount of money that represents the total amount of loan on an asset, plus taxes and other fees applicable.
In Financial accounting, principal is commonly associated with compound interest or simple interest.
Mathematically, simple interest is given by the formula:

<u>Where:</u>
- S.I is the simple interest.
- P is the principal amount.
- T is the time measured in years.
Read more: brainly.com/question/22621039