81. a negative times a negative is a positive
The signed numbers that represent a change in money from her perspective is:
+$25
+$14
-$10
-$3
+$2
<h3>What are the signs to put in front of the amounts?</h3>
When a person receives money, earns interst or his paid wages, the amount of money the person has increases. Thus, the sign to be used is the addition sign(+).
When a person pays for an item, donates to charity or loses money, the amount of money the person has reduces. Thus, the sign to be used is the subtraction sign (-).
To learn more about addition, please check: brainly.com/question/349488
Answer:
1/2
Step-by-step explanation:
0.5 is also the same as 1/2 in simplest form.
<span> (x − 4)(x2 + 3x − 1)
=</span><span>x^3 + 3x^2 - x -4x^2 - 12x +4
=</span>x^3 -x^2 - 13x +4
answer is <span>B.x^3-x^2-13x+4</span>
