Answer:

Step-by-step explanation:

Adding both equations will make it:

Putting x = 10 will make it:

= 3(1000)-40+1
= 3000-39
= 2961
<em>Greetings!</em>
This is how your double number line should look:
(lbs) 0 1 2 3 4 5
↓-----↓-----↓-----↓-----↓-----↓
0 3.5 7 10.5 14 17.5 (dollars)
Hope this helps!
2
350
x 40
____
000
1400
____
1,400
Yes it looks like it would be right
I think it may be: 0.66666666666
I only looked it up on the internet.