Which measure is a measure of center? mode, interquartile range, range, mean absolute deviation, quartile

Whose conclusion is correct? choose all that apply. (two max) elijah emily edward esme

Sketch the region enclosed by the given curves. decide whether to integrate with respect to x or y. draw a typical approximating rectangle and label its height and width. y= 5x, y=7x^2then find the area s of the region.

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.