Jenna bought some chocolate for her friends.She wants to give 1/5 of a bar of chocolate to each Jenna has 7 bars of chocolate ho
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Remember, for 
the x value of the vertex is 
so
given
x value of vertex is -5
and
multiply both sides by a
5=-5a
divvide both sides by -5
-1=a
a=-1
comlete the square
remember if we do
(h,k) is the vertex
I know, we can subsitute the known values of te vertex
-5 for h and 20 for k then expand
a=-1
c=-5
so
given
x value of vertex is -5
and
multiply both sides by a
5=-5a
divvide both sides by -5
-1=a
a=-1
comlete the square
remember if we do
I know, we can subsitute the known values of te vertex
-5 for h and 20 for k then expand
a=-1
c=-5
You can set up this equation as:
Because remember, 70% is equal to 0.7 and x represents the unknown value. So, let's just solve it:
So, 70% of 120 is 84.
Because remember, 70% is equal to 0.7 and x represents the unknown value. So, let's just solve it:
So, 70% of 120 is 84.