What is |-8|? I really need help

Aline has a slope of and a y-intercept of –2. what is the x-intercept of the line?

If p(a) = 0.70 and p(b) = 0.20, then a and b are independent events if

Use a standard normal table to determine the probability. give your answer as a decimal to four decimal places. −1.5< < 1.5)