Algebra problems
posted by Soly .
I have some problems that I would like checked please.
Find and simplify the difference quotient f(x+h)f(x)/h, h can not equal 0 for the given functions.
1. f(x)=x^2+3x+9 I got 2x+h+3
Evaluate the piecewise function at the given value of the independent variable.
2. g(x)={(x^2+2)/x2 if x can not=2
{x+8 if x=2
Determine g(5)
my options for the answer are: a. 5, b.3, c.3/7, and d. 27/7
I got 27/7 and 3 when I solved it, but I don't understand what the question is wanting because 27/7 doesnt equal 2.
3. f(x)={5x+4 if x<3
{2x+3 if x > or equal to 3
Determine f(7)
my answer options: a.39, b.10, c.42, d.35
I got 39 and 11 when I solved it and I also don't understand what the question is wanting.

Algebra problems 
Lizzie
What is 1/8(16m8)+17 in simplest form
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