Answer:\ b.
Step-by-step explanation:
Hope this helps!!
Answer:she bought 4 rolls of each color.
Step-by-step explanation:
Let x represent the number of rolls or spools of purple thread that Mrs. Bradley bought.
Let y represent the number of rolls or spools of orange thread that Mrs. Bradley bought.
Mrs. Bradley bought 8 spools of thread. This means that
x + y = 8
Each spool of purple thread is 3 meters long and each spool of orange thread is 4 meters long. If Mrs. Bradley bought 28 meters of thread in total, it means that
3x + 4y = 28
Substituting x = 8 - y into the equation, it becomes
3(8 - y) + 4y = 28
24 - 3y + 4y = 28
- 3y + 4y = 28 - 24
y = 4
Substituting y = 4 into x = 8 - y, it becomes
x = 8 - 4 = 4
D is the correct answer, $8.99+$12.99+7.5% = 23.6285. , rounded , 23.63.
ANSWER: y= 3x - 6
STEP-BY-STEP EXPLANATION:
(1,-3) and (3,3)
X1=1 X2=3
Y1= - 3 Y2=3
1) Find the slope of the line.
To find the slope of the line passing through these two points we need to use the slope formula:
m =
m= m= = 3
2)Use the slope to find the y-intercept.
Now that we know the slope of the line is 3 we can plug the slope into the equation and we get:
y= 3x+b
Next choose one of the two point to plug in for the values of x and y. It does not matter which one of the two points you choose because you should get the same answer in either case. I generally just choose the first point listed so I don’t have to worry about which one I should choose.
y= 3x+b point (1,-3)
-3= 3(1) + b
-3-3=b
-6=b
3)Write the answer.
Using the slope of 3 and the y-intercept of -6 the answer is:
y = 3x - 6