Neither ! X= -9/4 and Y=9
Answer:
Alex can do the job in 60 days alone.
Step-by-step explanation:
Alex and Brandon working together, they can finish the job of cleaning the school in 15 hours. Brandon alone in 20 hours can finish the job.
So, Brandon can complete
part of the job in one hour.
Let, Alex alone can finish the same job in x hours.
So, Alex can complete
part of the job in one hour.
So, working together they do
part of the whole job in one hour.
Hence, from the conditions given we can write

⇒ 15x + 300 = 20x
⇒ 5x = 300
⇒ x = 60 days.
Therefore, Alex can do the job in 60 days alone. (Answer)
For this case what you need to know is that each package contains 2 balloons.
Therefore, you can solve the problem by making the following rule of three:
1 package ---> 2 balloons
x ---------------> 275 balloons
Clearing x we have:
x = (275/2) * (1)
x = 137.5
Nearest whole number:
x = 138
Answer:
I need to buy 138 packs of balloons
Answer:
<h2>y + 4 = x</h2>
Step-by-step explanation:
The slope-intercept form of an equation of a line:

m - slope
b - y-intercept → (0, b).
The formula of a slope:

We have the points A(0, -4) → b = -4 and B(6, 2).
Calculate the slope:

Put the value of m and of b to the equation:
<em>add 4 to both sides</em>

The ones that you can see.....