Find the coordinates of the points on r = a (1 + cosx) where the tangents are parallel to the initial line x=0

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

Compare the cost of the bike trips from the two companies shown. for both the cost in a linear function of the number of days which statements is true

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.