Answer: 3.1
Step-by-step explanation:
120 minutes / 30 minutes = 4
3.5 miles x 4 = 14 miles
D) is correct.
Looking at the graph, it goes through the point (2, 200) and is very near the point (3, 300). This means it increases by nearly 100 every month; this tells us how much she saves each month.
Answer:
The equation for a parabola with vertex at the origin and a directrix at x = 1/48 is
.
Step-by-step explanation:
As directrix is a vertical line, the parabola must "horizontal" and increasing in the -x direction. Then, the standard equation for such geometric construction centered at (h, k) is:

Where:
,
- Horizontal and vertical components of the location of vertex with respect to origin, dimensionless.
- Least distance of directrix with respect to vertex, dimensionless.
Since vertex is located at the origin and horizontal coordinate of the directrix, least distance of directrix is positive. That is:



Now, the equation for a parabola with vertex at the origin and a directrix at x = 1/48 is
.