It B. You enter 5 instead of x and calculate.
A : inches
B:centimeters
C:feet
D:inches
Solution: She has £36 remaining.
To solve this is fairly simple. First we multiple 72 by .4 to get 40%. This gives us 28.8.
We then subtract 28.8 by 72 to get the money she has remaining after she spends 40%. The answer to this is 43.2
Then she spends 1/6 on makeup. So we divide 43.2 by 6 and multiply again by 5, which gives us 36.
Well, ok, the x intercepts aer where the function equals 0
also
if the x intercepts are r1 and r2 then the factored form of the function is
f(x)=a(x-r1)(x-r2) where a is a constant
well, we have it already in that form
f(x)=(x-3i)(x-3i)
the x intercept is at x=3i
standard form requires expansion
we expand to get
f(x)=x²-6i-9
