Can anyone help me with these math questions (Algebra)????

Question

anonymous · Answer

anonymous · Answer

anonymous · Answer

anonymous · Answer

espex · Answer

Have you attempted any of them?

anonymous · Answer

yes actually

espex · Answer

Okay, let's start with the first one, where did you get stuck?

anonymous · Answer

i know the right answers i just want an explanation of them

anonymous · Answer

see what i did with the first one is find the area of the rectangle, which is base times height

anonymous · Answer

but i don't know what to do next

espex · Answer

What was the total square footage you came up with?

anonymous · Answer

127.1256

espex · Answer

And you know that each tile covers 1sqft. So for each sqft it will cost you 2.49.

anonymous · Answer

so you times 127.1256  by 2.49

espex · Answer

Exactly.

anonymous · Answer

then i get 316.5

espex · Answer

And which of your answers is closest to that number?

anonymous · Answer

D

espex · Answer

Precisely.

espex · Answer

How about the second one?

anonymous · Answer

I don't get that one at all

espex · Answer

Okay, you are just plugging in your x/y values and determining which one of the equations could have generated that table.

espex · Answer

So start with the easy one. If x is 0 and y is 3, what equation could give you that answer?

anonymous · Answer

i still don't get it

espex · Answer

Let's take the bottom equation, y=x-1, and the x/y pair of 0/3. If we plug the values in, is the statement true?
3=0-1

anonymous · Answer

no its not

espex · Answer

So the idea is to find the one that IS true, for all of the values in the table.

anonymous · Answer

so A is the right answer

espex · Answer

Indeed, very good.

espex · Answer

How about number 3?

anonymous · Answer

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