Hey can someone me plz i don't know how to this?

So yes the board is wide enough. The are 10 decimeters in a meter.

What it is asking you to do in the example above is multiply 2.5/23.5 by 1.2 both top and bottom aka the numerator and denominator. This makes it easier to view and divide.

I didn't use this method I just looked at it but give it a try for your answer to B

The answer is:  " 156 " .

Given:  f(x) = 4^(2x) - 100 ;  

When "x = 2" ; 

f(2) =4^(2*2)  - 100 = [4^(4) ]  - 100 ;
 
        =  (4* 4 * 4 * 4) - 100 ;
       
        =  (16 * 4 * 4) - 100 ;
 
        =  (64 * 4)  - 100 ;

        =  (256) - 100 ; 

        =  156 .