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

15 and 14.7 are 1 apart, so 15 – 14.7 must be 1.

What is the radius of a circle with an area of 78.5 cubic inches? use 3.14 for pie

The customer price index(cpi), which measures the cost of a typical package of customer goods,was 208.8 in 2011 and 244.1 in 2016.let x=11 corresponding to the year 2011 an estimate to cpi into 2013 and 2014. assume that the data can be modeled by a straight line and the trend to continue idenfinitely.use data points to find such a line and then estimate the requested quantities