DJ Jacqueline is making a playlist for an mp3 player; she is trying to decide what 15 songs to play and in what order they should be played. If she has her choices narrowed down to 9 reggae, 9 jazz, and 16 blues songs, and she wants to play an equal number of reggae, jazz, and blues songs, how many different playlists are possible? Express your answer in scientific notation rounding to the hundredths place.

where is the figure

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.