A rock is rolling down a hill and has a kinetic energy of 500 J and a potential energy
of 3.920 J. What is the rock's mechanical energy?

Given the equation f(x)=a(b)x where the initial value is 40 and the growth rate is 20% what is f(4)

Awasher and a dryer cost $701 combined. the washer costs $51 more than the dryer. what is the cost of the dryer?

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