Fill in the blank to obtain the next step in evaluating a polynominal function:
F (x) = 7 x^2 + 9 x + 8
F (5) = 7 (______)^2 + 9 (5) + 8
now the answers I have to choose from is
5
25
10
The last one I think it is root 5 (has like a check mark type of thing
2007-04-19 16:19:36 · 6 answers · asked by swtsabre 1 in Science & Mathematics ➔ Mathematics
I am thinking after looking at it, it is 5
2007-04-19 16:23:01 · update #1
Lol and just looked at the replys and I am like doh... Thanks everyone:)
2007-04-19 16:23:32 · update #2
If you have f(5) just plug in 5 for every x to get
7(5)^2+9(5)+8
2007-04-19 16:23:52 · answer #1 · answered by Jim 5 · 0⤊ 0⤋
It is 5
2007-04-19 23:21:42 · answer #2 · answered by bruinfan 7 · 0⤊ 0⤋
The answer is 5 since you're replacing x with the value 5.
2007-04-19 23:22:59 · answer #3 · answered by Jo 4 · 0⤊ 0⤋
F(x) is a statement saying that whatever is past the equals sign is dependent on the x value that is inputed into it. You replace the x in F(x) with a number value to say that you are solving the function for that value to get a y value:
So if you plug in 5 for x in F(x) you plug in 5 for every other x you see in that statement, simple as that.
2007-04-19 23:25:25 · answer #4 · answered by Eolian 4 · 0⤊ 0⤋
The answer is 5, all you do is take the 5 and substitute it where the x is in the top problem.
2007-04-19 23:25:14 · answer #5 · answered by arblesnarf 2 · 0⤊ 0⤋
you put 5 in
notice that f(x) simple means that what ever your replace x with in parentheses, you'll replace the x's with in the equation
2007-04-19 23:24:07 · answer #6 · answered by Brandon 3 · 0⤊ 0⤋