Answer:
The percent price reduction was 15.83%
Step-by-step explanation:
we know that
In this problem
$379 represent the 100%
so
using proportion
Find out what percentage represent the difference between the original price and the final price
- 1 1/3 - 2 1/5
= -4/3 - 11/5
= -20/15 - 33/15
= -53/15
= -3 8/15 mg/L
Cos x = sqrt( 100 - 9) / 10
<span>= 0.9539392014</span><span>sin x = 0.3 = 3/10
</span>
i would start by simplifying the equation to get y by itself, you don't need to do this, but it makes it a little easier
y + 2 = 3 ( x + 4) distribute the 3 through the parenthesis
y + 2 = 3x + 12. subtract 2 from both sides
y = 3x +10
now to fill in the chart simply plug in the value of x to see what value of y it produces
y = 3(-2) +10
y = -6+10
y = 4
(-2,4)
y = 3(0) + 10
y = 0 + 10
y = 10
(0,10)
y = 3(2)+10
y = 6 + 10
y = 16
(2,16)
y = 3(4) + 10
y = 12 + 10
y = 22
(4,22)
