Find the product of 27×6×60 then explain how you would use mental math to find the product of 27×600

27x6x60=9,720                                                                                                      *You can use mental math by multiplying 27 by 6 and adding the 2 zeros to the end of the product*

Range is ouput
testing limints
basically see the vertices
y=a(x-h)^2+k
(h,k) is vertex

also, when a is negative, graph opens down
when a is positive, graph opens up

y<5
k musbe 5

eliminate last 2

since less than, must open down
negative a
second one

f(x)=-(x-4)^2+5 is ansre