# Search results

• Users: Loppyfoot
• In Precalculus Mathematics Homework Help
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1. ### Quick Factoring Help

Oh, so would it be: (x-1)y^2 - (-x-1)(x-1)? But how do I get to: (x-1)(y^2-x-1)?
2. ### Quick Factoring Help

Ok, so I got: (x-1)y^2 - (x+1)(x-1)
3. ### Quick Factoring Help

Oh so, I got (x-1)y^2 - (x+1)(x-1) COrrect?
4. ### Quick Factoring Help

So I get (x-1)y^2 + (1-x)(1-x) Where do I go from there in order to factor out the (x-1)?
5. ### Quick Factoring Help

Homework Statement Could someone help me factor, ((x-1)y^2)+(1-(x^2)) The Attempt at a Solution Is it possible to get to: (x-1)(y^2-x-1)?
6. ### Composite Function

How do I plug a function into an integer? Would g(f(x)) just be 5?
7. ### Composite Function

Homework Statement If f(x) = x3+3x2+4x+5 and g(x)=5, then g(f(x)) = ? Homework Equations The Attempt at a Solution I don't know if I am correct. g(f(x)) = g(x3+3x2+4x+5)= 225? I plugged 5 into the equation. Am I right?
8. ### The better buy problem

I found that if I plugged in the formula: CostA = ((1.25x)/20) + 4000 CostB = ((1.25x)/30) + 5500 into my calculator, and then made a table, plugging in values of x; in factors of 10000; it sped it up a little bit.
9. ### The better buy problem

I got 72,000 miles for where they are equal. So, after 72,001 miles would make Car B the best choice. Do you know if there is a faster way to complete this problem?
10. ### The better buy problem

Homework Statement Bob is deciding whether to buy Car A which is $4000 and 20mpg, or Car B which is$5500 and 30mpg. Bob guesstimates that the gas will be about \$1.25 per gallon. Repair costs will not factor into this problem. How many miles would Bob need to drive, before Car B becomes the...
11. ### I have a Math Question about Circles

Here it is: A circle with center (–3,4) is tangent to the x-axis in the standard (x,y) coordinate plane. What is the radius of this circle? I have no idea where to start. I know there is some rule about tangency and circles, but I am unsure. Thanks!