It costs 30 dollars per month for a cell phone plus 10 dollars for every GB of data. Which expression can be used to represent the cost of a cell phone bill when x is the number of GB of data used?

30 + 10

30 + 10

30x + 10
30, x, + 10

10x + 30
10, x, + 30

10x + 30x

Yo y do yall have 2 stars that means yall wrong bro

Researchers were interested in whether relaxation training decreases the number of headaches a person experiences. they randomly assigned 20 participants to a control group or a relaxation training group and noted the change in number of headaches each group reported from the week before training to the week after training. which statistical analysis should be performed to answer the researchers' question?

What is the value of x in the equation 2(x-4) = 4(2x + 1)?