The Walnut Cove Club sells hot dogs and drinks from a concession stand at the annual 4th of July parade. Carl bought 5 hot dogs and 4 drinks and paid $22.40. Susan purchased 4 hot dogs and 2 drinks and was charged $15.40. What is the cost of 1 hot dog?

im not quite sure if this is right but i got 5.6 oisutuve

step-by-step explanation:

true !

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answer: c, the green line

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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.

c > -10.55

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