Sold Last Month: 60 x
= 40
Remaining from last month: 60 - 40 = 20
Sold This Month: 20 x
= 8
Remaining from this month: 20 - 8 = 12
Answer: there are 12 houses left to be sold
P = perimeter
Perimeter of a rectangle = l + l + w + w
or P = 2l + 2w
You know:
P = 150 m
l = w + 5 [length is 5 m greater than the width]
P = 2l + 2w Plug in what you know
150 = 2(w + 5) + 2w Simplify, distribute/multiply 2 into (w + 5)
150 = 2w + 10 + 2w
150 = 4w + 10 Subtract 10 to both sides of the equation
140 = 4w Divide 4 on both sides
35 = w
PROOF l = w + 5 ---> l = 40
P = 2l + 2w
150 = 2(40) + 2(35)
150 = 80 + 70
150 = 150
Simply set up a proportion. 1/3 = x/48. Cross multiply afterwards. 48 = 3x. Solve the equation. x = 16. By using proportions which is another form of a ratio you can easily find out that there are 16 adults at the school. Hope this helps :))
The first one might be b or c
The most direct form to graph a line, is to find two points of it and connect them with a line.
Here we have:

Let's find the point where x = 0. To do this, we replace the x in the equation by 0:

We have our first point: (0, -6)
Next let's find the point where y = 0. Again, we replace y in by 0 in the equation:

We have our second point, (3, 0)
Now all we have to do is plot the points (0, -6) and (3, 0) in the plane, and connect them with a line, and then the line is graphed
The line should look like this: