Question 4 1 pts A sign chart for f" can be used to tell where f is [ Select ] [ Select ] increasing or decreasing concave upward or concave downward continuous or discontinuous positive or negative[ Select ] v of f is a point (c, f(c) ) on the graph of f [ Select ] An intercept A partition point A break-even point An inflection point A critical pointQuestion 2 1 pts If sales NV(@ ) are expressed as a function of the amount * spent on advertising, then the dollar amount at which NV(@), the rate of change of sales, goes from increasing to decreasing is call the [ Select ] If d is that dollar amount, then (d, N(d)) IS [ Select ] of N(x).If sales N(@) are expressed as a function of the amount * spent on advertising, then the dollar amount at which IV(@), the rate of change of sales, goes from increasing to decreasing is call the [ Select ] If d is that dollar amount, then (d, N(d)) [ Select ] break-even point of N(a). local maximum global maximum equilibrium point point of diminishing returns vertexQuestion 2 1 pts If sales Me) are expressed as a function of the amount * spent on advertising, then the dollar amount at which N(@), the rate of change of sales, goes from increasing to decreasing is call the [ Select ] . If d is that dollar amount, then (d, N(d)) is [ Select ] of N(). [ Select ] a partition point an inflection point a break-even point a critical point an equilibrium pointQuestion 1 1 pts Suppose f"[m) 3: t] on some interval (a, b]. Check all ofthe following statements that must be true. [I f is decreasing on the interval (a, b]. D f is increasing on the interval {11, b). D f is concave upward on the interval (a, b). D f is concave downward on the interval {11, b). D f' is increasing on the interval (is, b]. |:| j" is decreasing on the interval {3,15}