A legend
A) adds a third dimension to each data series, creating a distorted perspective of the data.
B) places (stacks) data in one column per category, with each column having the same height of 100%.
C) is a key that identifies the color, gradient, picture, texture, or pattern fill assigned to each data series in a chart.
D) places stacks of data in segments on top of each other in one column, with each category in the data series represented by a different color.
C
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Write a stub for the following function prototype:
``` double root( double a, double b, double c, int i); // Precondition: a != 0 and a, b, c are coefficients of // a quadratic equation a*x*x + b*x + c = 0 The value // of i is either +1 or -1 to choose which root. // Postcondition: return value, x, satisfies the // equation a*x*x + b*x + c = 0 ```
Select the true statement from those listed below.
a. The input element with type=”email” will cause all browsers to edit for a valid e-mail address. b. The required attribute will cause all browsers to verify that the user has entered information into the form control. c. The input element with type=”date” will cause all browsers to display a calendar control d. The input element with type=”email” will cause browsers that do not support the attribute to display a text box.