What is negative 2 1/6 minus negative 1 3/4?

Working on itts i’m going to need you to me as i go along 1-5

Describe the 2 algebraic methods you can use to find the zeros of the function f(t)=-16t^2+400.

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