SOLUTION: the work has to do with finding function values if f(x)=3x^2+x-2 and h(x)=7x+3, find each value 1. f(5) 2. h(-4) 3. 2[f(-1)] 4. f(3)-h(2) 5. 4[h(1/2)] 6. f(a)+h(a) 7.

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Question 9820: the work has to do with finding function values
if f(x)=3x^2+x-2 and h(x)=7x+3, find each value
1. f(5)
2. h(-4)
3. 2[f(-1)]
4. f(3)-h(2)
5. 4[h(1/2)]
6. f(a)+h(a)
7. Hi-Tech Inc. is a consulting company that charges $750 up front plus475 for each day computer training.
a.write an equation in functional notation that describes the cost of hiring the consulting company for d days of employee training.
b. what would the cost be if you hired the consulting copany for three days of training.
c. another training company, software specialists group, provides computer training for a flat rate of $600 per day. Which company offers the better deal if you need 7 days of employee computer training? how much would the training cost?
this is an Algebra II class
I hope somebody would help me this is due tomorrow thank you
sincerely bruce garcia
Answer by rapaljer(4671) (Show Source):
You can put this solution on YOUR website!
This is called "functional notation," and I think I need to submit a lesson plan on this topic. There seems to be a lot of confusion about it. This problem is "f(x) = 3x^2 + x -2", but it is read "f of x" and it means like a separate variable, like "y = 3x^2 + x - 2". It means BIG TIME SUBSTITUTION!! If

, then f( 5) means to substitute 5 for each of the x's:

For h(-4), use the h(x) formula and subsitute -4 in place of all the x's:

2[f(-1)] means find f(-1), and multiply that number times 2.

f(3) - h(2) means to find f(3) and find h(2), and subtract these quantities.

That will get you started! Since this looks like a homework assignment (all submitted in ONE problem to algebra.com!!), you can finish the work!

R^2 at SCC