How much fabric is needed to create the sail below? 14ft by 9ft
2 answers:
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Step Number 1. is to Simplify 
Step Number 2. <span>Simplify so you get </span>
Done! :)
Step Number 2. <span>Simplify so you get </span>
Done! :)
we are given
f(x)=[x=1]
where bracket means ceiling functions
we know that
Ceiling function returns the least value of the integer that is greater than or equal to the specified number
so, we can check each options
option-A:
At x=-4:
f(x)=[-4-1] =-5
For x<-3:
Let's assume
x=-3.1
f(x)=[-3.1-1] =[-4.1]=-5
so, this interval is TRUE
option-B:
At x=-2:
f(x)=[-2-1] =-3
For x<-1:
Let's assume
x=-1.1
f(x)=[-1.1-1] =[-2.1]=-3
so, this is FALSE