Amelia needs to buy some dog food. At the nearest store, 2 bags of dog food cost $9.50 How much would Amelia spend on 5 bags o
2 answers:
Answer:
Five bags would cost $23.75
Step-by-step explanation:
We first need to figure out how much one bag of dog food costs. To do this, we need to do
This answer is $4.75 for each bag of dog food.
Now since we are buying 5 bags of dog food, we would multiply 5 by $4.75: = $23.75.
Therefore, it will cost us $23.75 to buy 5 bags of dog food. Hope this helped!
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Answer:
In vertex form it's
In standard form it's
Step-by-step explanation:
We can use the vertex form to solve for a in
"a" is the number out front that dictates the steepness, or lack thereof, in a parabola. That means that we need h and k (which we have in the vertex) and we need x and y (which we have in the form of one of the zeros). Filling in using a vertex of (-7, -9) and a coordinate point (-7, 0):
simplifies a bit to
simplifies a bit more to
and
so
,
and finally,
a = 1
Phew! So there is the a value. Now we can simply fill in the formula completely, using the vertex as our guide:
In standard ofrm that is
We can check ourselves for accuracy by factoring that standard polynomial using whatever method of factoring you like for quadratics and get that the roots are in fact x = -10, -4
The only reason we needed the zeros is to use one of them as the x and y to solve for a.