A box with a closed top has a base length that is three times its width. It needs to be hold 500cm 3 of material. Find the dimensions of the box that will have the smallest
surface area.

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)

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

The input to the function is x and the output is y. write the function such that x can be a vector (use element-by-element operations). a) use the function to calculate y(-1.5) and y(5). b) use the function to make a plot of the function y(x) for -2 ≤ x ≤ 6.