This morning, Rita's car had 18.12 gallons of fuel. Now, 4.7 gallons are left. How much fuel did Rita use?
1 answer:
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Answer: h=7
Step-by-step explanation:
By definition the function in vertex form is:
Where (h,k) is the vertex of the parabola.
You must group the terms that contain the same variable in the function:
Complete the square as following:
Now you must rewrite it as following:
Then:
h=7