Answer:
x squared plus two times x minus one = zero.
Step-by-step explanation:
(This is a Quadratic equation in the variable x).
ANSWER
D. 13
EXPLANATION
We have

To find

means we want to find an x-value whose image is 3.

We cross multiply,

Expand:

Combine like terms,



4 books
2(her gym clothes)+1(her lunch)=3
11(the total)-3(what we know)=8
8(the amount of room remaining)/2(the weight of each book)=4
4 books is the answer
Y+5=-11
-5 -5
Y= -16
Answer:-16