When two variables have a negative correlation, a. when the x-variable decreases, the y-variable decreases. b. when the x-variable decreases, the y-variable increases. c. when the x-variable increases, the y-variable increases. d. more than one of the above is correct.

B. When the x-variable decreases, the y-variable increases

Step-by-step explanation:

The correlation is a quantity that is expressed in a range from-1 to +1. When the correlation is +1 indicates that the varibles have a positive correlation, then when one variable increases or decreses the other varaible will have the same change. When the correlation is -1 indicates a negative correlation then when one variable increases the other variable will have an opposite behavior.

One example of variables that have a negative correlation is the pages printed and the ink supply. Because when the pages printed increase the ink supply decrease.

93.8

step-by-step explanation:

lets say, first number = x

second number = 3x+7

total = 49

(x)+(3x+7)= 49

4x+7 = 49

4x = 42

x = 42/4

x= 10.5

x= 10.5

3x+7 = 3(10.5)+7 = 93.8

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the expression (1.26)2t reveals the approximate rate of increases in the number of plants semiannually.

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