<p>1) Let the function of be defined by f(x) = x + 1. If 2f(p) = 20, what is the valu e of f(3p)?</p>
<p>2) The figure above shows the graph of a quadratic function f that has a minimum at the point (1,1). If f(b) = f(3), which of the following could be a value of b?</p>
<p>a) -3
B) -2
C) -1
D) 1
E) 5</p>
<p>(The figure above refers to a parabola facing upward with its vertex at coordinates (1,1)</p>
<p>3) In the xy-coordinate plane, the distance between point B(10,18) and point A(x, 3) is 17. What is one possible value of X?</p>
<p>And i would very much appreciate it if someone could help me on</p>
<h1>6, PG. 549 of the Blue Book.</h1>
<p>I would put the question down but it has a graph with it</p>
<p>i dont understand functions!</p>
<p>1) 2f(p)=20
f(p)=10
10=p +1
p=9
f(3p)= 3*9 +1
=28</p>
<p>4) A regulation for riding a certain amusement park ride requires that a child be between 30 inches and 50 inches tall. Which of the following inequalities can be used to determine whether or not a child's height 'h' satisfies the regulation for the ride?</p>
<p>a) |h-10|<50
b) |h-20|<40
c) |h-30|<20
d) |h-40|<10
e) |h-45|<5</p>
<p>thanks srk_fx. i never see the most obvious steps first.. ARGH</p>
<p>2) c
b and 3 are x values on the graph. If 1(min pt) is their middle point, then b must be -1, so the answer is c. </p>
<p>3) use pythagorian theorem
17^2= (18-3)^2 + (10-x)^2
289-225=(10-x)^2
x=2
There could be another answer (negative value) but I'm too lazy to work it out.</p>
<p>4)d
Quickest way is to plug in variables. There's a rule that was taught in calc class, but I didn't bother to learn it</p>
<p>4)d because 40+10=50 and 40-10=30. You just add and subtract and those are the two ends of your range.</p>