How many instruments should I use to make my song? I have seven instruments

Solve each quadratic equation by factoring and using the zero product property. [tex]x^2+6x+8=0[/tex]

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

Given sin28.4=.4756, cos28.4=.8796, and tan28.4=.5407 find the cos of 61.6