An exterminator estimates that the house has approximately 64,000 ants. After treating the house with repellent the ant population decreases at a rate of 8% per hour. Which equation represents the situation where Y is the number of ants remaining after X hours. A. Y=64000 (0.2)X

B. Y=6400 (0.8)X

C. Y=6400 (0.92)X

D. Y= 6400 (1.08)X

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.

i'm sorry i don't know

step-by-step explanation: