UM ANY help pls?
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What is the name used to describe a graph where for some value of x, there exists 2 or more different values of y?

Nine more than four times a number is the same as one less than twice the number. find the number?

Which of these sequences is a geometric sequence a 1,2,4, 7, 11, 16, 22. b. 2.4.8.14.22.38 c.3.6.9. 15.18,21 d. 3,9,27,81,243,729,