Help with numbers 2,4, and 7 in Blue Book pg 359

<p>I don't know how to solve numbers 2,4 and 7 on pages 359-360 in CB Blue Book 2nd edition? Can anyone pls help?</p>

For what integer value of x is 3x+5>11 and x-3<1?
Solution: We must solve first [3x+5>11]
x>2 So, we have requirement for first expression.
The same with second [x-3<1]
x<4 So, we have second requirement.
What integer value is more than 2 but less than 4. 2<x<4 The only integer is 3.So the answer is 3.</p>

Table is shown in book. In this math problem we must find relationships between numbers. Logic tells that only value is 3/2, because 4 6 12 . P.S I'm not sure in this exp.
A line {L} with a slope of 1/4 passes through the points (0,1/2) and (4, y). What is the value of y?
You must know equation of Slope=y2-y1/x2-x1
y2=6/4 or 3/2 or 1.5</p>

<p>I got 2 and 7 but for number 4, where did the 4 6 12 come from?</p>

<p>We must guess to what number multiply 9 in order to get number more than 4 but less than 12.</p>