Which of the following best describes the focus of a parabola? O A. A single line that is the same distance from the parabola as the
directrix is from the parabola
B. A single line that is half the distance from the parabola as the
directrix is from the parabola
C. A single fixed point that is the same distance from the parabola as
the directrix is from the parabola
D. A single fixed point that is half the distance from the parabola as
the directrix is from the parabola

no one knows lol

step-by-step explanation:

answer: c, the green line

step-by-step explanation:

there is no black line, eliminate b.

simple interest implies periodic payments, but the red line shows no payments, eliminate d.

simple interest has equal payments. if paid say every day, the graph is about a straight line (actually a stairstep).

the yellow line is not straight, eliminate a.

check: the green line is straight, answer is c.

simple interest with positive interest rate gives a straight line sloping up to the right. green line:

g(t) = $100 + ($200-$100) ÷ (20 years) × (t years)

= $100 + (4%/year) × ($100)(t years)

incidentally, the yellow line curving upward represents continuously compounded interest

y = $100 × 2^(t years / (14 assuming the yellow line hits $200 at 14 years. 2^0 is 1, so y(0) = $100; 2^(14/14) is 2, so y(14) = $200.

1/6

step-by-step explanation: