16 - 2r = -3r + 6r + 1

1+5/7

Step-by-step explanation:

16-2r=3-r+6r+1

We move all terms to the left:

16-2r-(3-r+6r+1)=0

We add all the numbers together, and all the variables

-2r-(5r+4)+16=0

We get rid of parentheses

-2r-5r-4+16=0

We add all the numbers together, and all the variables

-7r+12=0

We move all terms containing r to the left, all other terms to the right

-7r=-12

r=-12/-7

r=1+5/7

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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step-by-step explanation:

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