Ayesha bought a 24-pack of lip gloss for $18.96. What is the unit cost per tube of lip gloss?
2 answers:
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Answer:
See below
Step-by-step explanation:
I assume you mean
The equation is already in vertex form where
affects how "fat" or "skinny" the parabola is and
is the vertex. Therefore, the vertex is
.
The axis of symmetry is a line where the parabola is cut into two congruent halves. This is defined as for a parabola with a vertical axis. Hence, the axis of symmetry is
.
The minimum value is the smallest value in the range of the function. In the case of a parabola, the y-coordinate of the vertex is the minimum value. Therefore, the minimum value is .
The interval where the function is decreasing is
The interval where the function is increasing is
Answer:
Step-by-step explanation:
Formula for perimeter of a rectangle:
= width
= length
Since the length is twice the width,
.
So, plugging these values into the formula, as well as the given perimeter of 121 feet, we get,
And after some simplification, we are left with,