A function, f(x), models the depth of water in a wading pol that is filling at a rate of 11 gallons per minute. which of these describes why f(x) can be considered a linear function. I. Fore every 1-minute interal the depth of water in the wading pool increasews by the same amount.
II. The function grows by equal factors every minute.
III. The slope of the function is constant.
A. I only
B. I and III only
C. II and III only
D. I, II, and III

An electronics manufacturer wants to know if customers would be interested in a detachable keyboard for their tables and if so, what the most important features would be. the manufacturer partners with an electronics store to include copies of the survey with every purchase at that store for one week. which of the following best explains why this random sample is unlikely to be a good representative sample of tablet owners' preferences for a detachable keyboard? a) one week is likely not enough time to get a large enough sample. b) most people won't bother to send in the survey, which is likely to skew the results c) there is no way to verify whether the responders to the survey actually own a tablet d) the survey is biased because it was conducted through an electronics store, not the general population

Which is the equation of an ellipse with directrices at x = ±4 and foci at (2, 0) and (−2, 0)?

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left