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Question 12 of 150.0/ 1.0 PointsThe Number class method _____ converts a number to a string in exponential notation using the number of decimal places specified by decimals. toExponential (decimal)Question 13 of 151.0/ 1.0 PointsTo specify optional character to exclude in a pattern match, include the ______ metacharacter immediately before the characters in a character class. ^Question 14 of 151.0/ 1.0 PointsAssigning a variable name to empty brackets () creates an empty ____. arrayQuestion 15 of 151.0/ 1.0 PointsIn a system that supports persistent logins, when a user logs into the system, the web server provides the browser a string of random characters known as a _____. token