A manufacturer of flea collars for animals that weigh less than 5 kilograms injects the collars
with 15 milligrams of a biocide that only acts on fleas. The manufacturer will release a collar that
has no less than 14 milligrams and no more than 16 milligrams of insecticide. The following list
shows the result of sampling 36 collars from an actual production run of 720 collars.
17, 14, 14, 16, 14, 15, 15, 15, 16, 14, 16, 14, 15, 15, 15, 16, 13, 13, 13, 13, 13, 14, 14, 13, 17, 14,
15, 13, 14, 15, 16, 17, 14, 17, 14, 15, 4.
7. How many flea collars out of a production run of 720 collars would be acceptable to ship
according to this sample? Explain your reasoning.

d) -1

step-by-step explanation:

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.