Dexter paid $74.94 for 201⁄5 gallons of gas. What is the price of gas where Dexter filled up his vehicle?
1 answer:
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Answer:
Step-by-step explanation:
Notice that the focus is a points on the vertical axis, that means the parabolla opens vertically, and has the form
Because the parameter is positive and equal to 0.75. Additionally, the vertex is at the origin, that's why the equation is this simple.
Replacing the parameter value, we have
Therefore, the equation of a parabolla with vertex at the origin and focus at (0, 0.75) is .
Take a look at the attachment to see the solution.
A = future value
P = principal (P = 12,000)
r = interest rate (r=6)
n = time periods (n=12)
A = future value
P = principal (P = 12,000)
r = interest rate (r=6)
n = time periods (n=12)