0.
1/2 is equivalent to 0.5
1 is equivalent to 1.0
203---- 100%
x-----148%
x=203*148/100=203*1.48=300.44
64-35= 29
so there were 29 boys included in the survey

If x²-1 is a factor of the polynomial, both x-1 and x+1 are factors of it.
According to the remainder theorem, if a binomial x-a is a factor of a polynomial p(x), then p(a)=0.
If x-1 and x+1 are factors of the polynomial p(x)=ax⁴+bx³+cx²+dx+e, then p(1)=0 and p(-1)=0.
Answer: -3
-3(0)-1=-1
-3(-4)-1=11
-3(-6)-1=17
I hope this is good enough: