Question

The price of gold has increased by 35% per year from 2000. In the year 2000, Harry bought a gold ring for $590. Which of the following functions f(x) can be used to represent the price of the ring x years after 2000?

f(x) = 590(1.35)x

f(x) = 590(0.65)x

f(x) = 35(0.41)x

f(x) = 35(1.59)x

Answer 1

@kc_kennylau

Answer 2

Is it A?

Answer 3

Perfect :)

Answer 4

Thanks :)

Answer 5

no problem :)

Answer 6

Can you help me with one more?

Answer 7

Of course

Answer 8

Clara is taking a medicine for a common cold. Her body metabolizes the medicine over a certain time interval. The table below shows the amount of medicine f(t), in mg, that was present in Clara's body after time t.


t (hours) 1 2 3 4 5
f(t) (mg) 236.5 223.73 211.65 200.22 189.41


Heidi was administered 300 mg of the same medicine. The amount of medicine in her body f(t) after time t is shown by the equation below.

(t) = 300(0.946)t

Which statement best describes the rate at which Clara and Heidi's bodies eliminated the medicine?
Clara's body eliminated the antibiotic faster than Heidi's body.

Clara's body eliminated the antibiotic at the same rate as Heidi's body.

Clara's body eliminated the antibiotic at half of the rate at which Heidi's body eliminated the antibiotic.

Clara's body eliminated the antibiotic at one-fourth of the rate at which Heidi's body eliminated the antibiotic.

Answer 9

Is it B?

Answer 10

@kc_kennylau

Answer 11

Yes

Answer 12

Thanks :)

Answer 13

No problem! :D