Friday

March 6, 2015

March 6, 2015

Posted by **Leo** on Saturday, April 6, 2013 at 5:50pm.

my answer is x+1. Am I right?

2.)If f(x)=3x,g(x)=x-3,and h(x)= the square root of x, find (fogox)(X). I really didn't get this will someone please show me how to do it?

- pre calculus -
**Leo**, Saturday, April 6, 2013 at 6:34pmThe first one is correct but I am still not sure about the second one.

This I what I did to solve for it:

3(x-3)

3(he square root of 25-3

3(5-3)

15-9=6

Is it correct?

- pre calculus -
**Steve**, Sunday, April 7, 2013 at 6:30amf(x) = 3/√(x+2)

f(g) = 3/√(g+2) = 3/√(x+3)

so, you are correct; g(x) = x+1

for the second one, you're not solving any equation; you're just expressing a composite function as a single one, just as in #1.

f(x) = 3x

g(x) = x-3

h(x) = √x

(f◦g◦h)(x) = f(g(h(x)))

f(g(h)) = f(h-3) = 3(h-3) = 3(√x-3)

or,

f(g(h)) = 3(g(h)) = 3(g(√x)) = 3(√x-3)

**Answer this Question**

**Related Questions**

college pre-calculus - simplify: square root (4/3)-square root (3/4) A. 2-...

Pre Calc!!!!!!!!!! test tom!! - Square root of x is the equation. Translate: ...

Algebra - Simplify: 3 squared divided by the square root of 80. Multiple choices...

Algebra - 69: 16x^2+8x-3. I inserted this into the quadratic formula and got -8...

MATH - Which expression is a polynomial???? A: 11 0ver the square root of x B: ...

Math ~CHECK MY ANSWER~ - 1) Which of these is a rational number? a. Pi b. Square...

Math Help! - Four students worked to find an estimate for square root 22. Who is...

Math 12 - Review - Quadratic - Could someone please show me ALL the steps to do ...

algebra - 1.)correct 2.)wrong---> the first term is wrong 4(3a^2)^2 = 36a^4 3...

Math simplifying mixed radicals - Please help me simplify these following mixed ...