A gardener expects that 75% of the seeds she plants will produce plants she wants 45 plants how many seeds should she plant ?
2 answers:
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Answer:
Direction parabola opens upward.
Vertex of parabola is (27,-9).
Axis of symmetry is .
Step-by-step explanation:
Note: Option sets are not correct.
The vertex form of a parabola is
...(1)
where, (h,k) is vertex and x=h is the axis of symmetry.
If a<0, then parabola opens downward and if a>0, then parabola opens upward.
The given function is
...(2)
On comparing (1) and (2), we get
, so direction parabola opens upward.
, so vertex of parabola is (27,-9).
So, axis of symmetry is .
Answer:
$14,644.63
Step-by-step explanation:
To solve this problem we can use the compound interest formula which is shown below:
<em>P = initial balance </em>
<em>r = interest rate </em>
<em>n = number of times compounded annually </em>
<em>t = time </em>
<em />
First change 12% into a decimal:
12% -> -> 0.12
Lets plug in the values:
Tammy will own $14,644.63 after 8 years,