A brand new smartphone costs $1200. It decreases in value by 13.3% every year after its purchase. Which function models the value of the phone x years after its puchase? f(x)=0.867(1200)x

f(x)=1200(0.867)x

f(x)=1200(1.133)x

f(x)=1.133(1200)x

I will give brainliest
ASAP please

  b.   the average rate of change of f(x) is less than the average rate of change of g(x).

step-by-step explanation:

since the length of the interval is the same in each case, we only need to compare the change in y-value to see which is greater.

so the change in y-value for function f is (6 )) = 9.

the table tells us

so the change in y-value for function g is (31 -1) = 30.

the change in y-value of f(x) on the interval is less than the change in y-value of g(x) on the same interval, so the average rate of change of f(x) is less than the average rate of change of g(x).

the correct answers i think are b. and d.

give me brainliest if it is correct!

answer: (-6,3)

step-by-step explanation: