How can i calculate the angle of elevation from point a to b?

Which of the following lines is not parallel to the graph of y = 4x +7?

The contents of 3838 cans of coke have a mean of x¯¯¯=12.15x¯=12.15. assume the contents of cans of coke have a normal distribution with standard deviation of σ=0.12.σ=0.12. find the value of the test statistic zz for the claim that the population mean is μ=12.μ=12.

Use the data on the dot plot to answer the question. how many people read for more than three hours last week? i'm on a unit test review