Exercise #4: The mile and the kilometer are relatively close in size. Can you convert 1 mile into an
equivalent in kilometers? Here's what I'll give you.
There are 2.54 centimeters in an inch, 5,280 feet in a
mile, 100 centimeters in a meter, and 1000 meters in
a kilometer. All else you should be able to do for
yourself. Round your answer to the nearest tenth of a
kilometer.

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.