I need someone to help me with polynomial functions. I have four equations and I need the Function type, Shape, Domain and range, X-intercepts, Y-intercepts and
Intervals of increase and decrease.
The equations are:
y= -3x+4
y=x2+5x-2
y= -2x3+5x2-5x+8
y=x4+5x3-3x2+2x-3

The mean finish time was 185.52 with a standard deviation of 0.327 minute. the winning car driven by chris finished in 185.13. the previous year race had a mean finish time of 110.3 with a standard deviation of 0.106. the winning car that year driven by karen finished in 110.13 minutes. find their respective z-scores. chris - z-score karen “- z-score