To convert 25 hours to minutes would you use the ratio 1/60

Evaluate cos2θ for cosθ = square root of 3/2

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab

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