What was the biggest decrease in time if the first times were 55.3 seconds 55.29seconds 55.295 seconds 55.037 and the second times were 40.38 seconds 40.402seconds 40.4seconds and 41.2 seconds

Iii. this is basically double integrals. i'll try my best to answer this, though there's not much i can do since the question is kind of vague.you should be given (or find) the equation that yields the line that marks the area of the region. this will be your function. the bounds should be given (or you should find them with the graph). find the domain and range. these will be the values you put on the integral signs. it doesn't matter which set you assign to the choose one that will make solving easier.take the integral (inner one) of the function with respect to dx or dy. this depends on which bound you set first and second. then do it again with the outer integral with respect to dx or dy (which ever one you didn't do first).good luck.