Answer:
5
5Step-by-step explanation:
If you use the distance formula you can solve it pretty easily. The distance formula is:
d = 
The two points you want are A and D. A is (-1, -4) and D is (3, -1). Plug that into the formula...
d = 
d = 
d = 
d = 
5
I can solve it in a different way if you want me to.
Hi,
Solving:

Answer: 1
Hope this helps.
If you have any questions about the answer comment below and I'll reply.
r3t40
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Expression
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5x - 3x
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Substitute x = 2
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5 (2) - 3(2)
= 10 - 6
= 4
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Answer: 4
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It will take him 10 weeks because $15 x 10= $150