Answer: (0, 1), (-1, -3)
Given two equation's:
- y = 2x² + 6x + 1
- y = −4x² + 1
<u>Solve them simultaneously</u>:
(a) When x = 0, y = −4(0)² + 1 = 1
(b) When x = -1, y = -4(-1)² + 1 = -3
Solution: (x, y) → (0, 1), (-1, -3)
−6.5(n−5)=18.2
distribute
-6.5n +32.5 = 18.2
subtract 32.5 from each side
-6.5n = -13.4
divide each side by -6.5
n=2.2
Answer n=2.2
Answer:
A is true.
Step-by-step explanation:
<h3>A is true because y=15x+75 means that they charge $15 for every person but $75 right away. For planner 2, they charge $20 a person because comparing coordinates 1 and 2, every 5 people charge $100. So to find the amount per person for planner 2, divide 100 by 5 and you'll get 20, and since 20 is 5 more than 15. A is true.</h3>