Jenny buys 22 sports drinks for her soccer team. they are on sale for $0.35$0.35dollar sign, 0, point, 35 off per drink. jenny paid $18.70.$18.70dollar sign, 18, point, 70 for the 22 sports drinks.
what question does the equation 22(x-0.35)=18.7022(x−0.35)=18.7022, left parenthesis, x, minus, 0, point, 35, right parenthesis, equals, 18, point, 70 answer?

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.

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