The Disney trip was 5 years ago. Now, Erin is 16 and her sister is 8.
x + 4x = 40
5x = 40
x = 8
Mrs. Viola has 8 and Mrs. Rullo has 4*8=32 pens.
Answer: according to spark notes: There can be 0, 1, or 2 solutions to a quadratic equation, depending on whether the expression inside the square root sign, (b2 - 4ac), is positive, negative, or zero. This expression has a special name: the discriminant.
In this case it is 0, not 2, which was my first and wrong answer
Answer:
1. 13
2. 11
3. 10
4. 9
5. 12
6. 16
7. 14
8. 40
Step-by-step explanation:
