Sadie is saving for a new car. Below is the total amount of money in her savings account on the last day of each month. Show all
steps to find the mean amount of money Sadie saves each month. Round your answers to the nearest cent.
1 answer:
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Answer:
,
Step-by-step explanation:
The function of the graph can be written in the vertex form as
, where V(h,k)=V(2,4) is the vertex of the quadratic function.
We substitute the value to obtain;
,
The point (5,1) lies on the graph so we use it to determine the value of a.
,
,
,
The required equation is
,