The answer is [A]: "Section A: "7.0 - 7.5" — in the figure shown" . ________________________________________________________ Explanation: ________________________________________________________ The question asks: ________________________________________________________ "In which section of the number line is √55?" ________________________________________________________ We know that: 7² = 49 ; 8² = 64 .
So, 7 < √55 < 8 ; So, √55 will be in between 7 and 8.
So, √49 < √55 < √64 .
55 - 49 = 6 .
64 - 55 = 9 .
So, there is greater difference between the radicands in
√64 and √55 ; compared to the difference in radicands between
√49 and √55 . ________________________________________________ This tells us that the correct answer is: ________________________________________________ [A] { in the figure shown: "7.0 - 7.5" } ; ________________________________________________ rather than: [B]: { "7.5 - 8.0" } . ________________________________________________
f(x) has 1 x intercept at x=0 because there is an x value that exists when y=0. For g(x), by adding 2 to it moves the parent function up 2 so there is now no x-intercept.
