Answer:
60 packets
Step-by-step explanation:
Given that :
Unit cost of 20 packets
$5.49 / 20 =$0.2745
Unit cost of 60 packets :
$10.97 / 60 = $0.1828333
Unit cost of 90 packets :
$18.95 / 90 = $0.2105555
The 60 packets has the least cost per unit, hence it is the best buy.
This is a proportional relationship. So any example that shows as x increases, y decreases.
A real life example would be where
x=time i let the pool drain
y=amount of water left over
As I let the time I let the pool drain increase, the amount of water left in the pool decreases.
Answer:
-2x - 10
Step-by-step explanation:
(2x-6) - (4x+4) multiply (4x+4) by -1 -1(4x + 4) = -4x - 4
2x - 6 - 4x - 4 Re-arrange
2x - 4x - 6 - 4
-2x - 10
Answer:
<h2>x = - 1.14 or x = 2.64</h2>
Step-by-step explanation:
2x² - 3x - 6 = 0
Using the quadratic formula
a = 2 , b = - 3 , c = 6
Substituting the values into the above formula
We have
We have the final answer as
<h3>x = - 1.14 or x = 2.64</h3>
Hope this helps you
