What are the solutions to 3x^2-x-16=0? use the quadratic formula

Given that abcd is a rhombus, what is the value of x?

Askateboard ramp is in the shape of a right triangle what is the height of the ramp

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