What is a curve? Also..need help with math problem inside.

Test Preparation SAT Preparation
1

<p>What is the SAT curve? I don't understand this at all.</p>

<p>Also, I have a question with function problems. How would one go about doing this:
Let the function x be defined as f(x)=x^2 + 18 (x squared plus 18)
If m is a positive number such that f(2m)=2f(m) what is the value of m?</p>

<p>How would one do that??</p>

2

<p>When the SATs are scored, you get a raw score. That raw score is then converted to something on the 200-800 point scale. The conversion factor is usually different at every SAT</p>

<p>for your problem</p>

<p>f(x) = x^2 + 18</p>

<p>If f(2m) = 2*f(m), set up your equation like this:</p>

<p>(2m)^2 + 18 = 2 * (m^2 + 18)</p>

<p>Now solve and figure out what m is</p>

3

<p>Okay thanks a lot!</p>

4

<p>phoenix is correct</p>

5

<p>Ok also...</p>

<p>how would one do this:
Let the function f be defined by f(x)= x + 1.
If 2f(p)=20 what is the value of f(3p)?</p>

6

<p>Oh, and can someone give me a question similar to the latter one just so I can get some practice?</p>

7

<p>f(p) = p + 1, so 2f(p) = 2p + 2.</p>

<p>It says that 2f(p) = 20, so</p>

<p>2p + 2 = 20 (solve --> p = 9)</p>

<p>f(3p) = f(3*9) = f(27) = 27 + 1 = 28.</p>