The Formula C = 20W shows how much the cost, C, of sending a letter by first-class mail depends on the weight of the letter, W. (C is measured in cents and W is measured in ounces). So you consider C a function of W and write C(W) = 20W. What is the domain of C?

Which statement justifies why angle ebc measures 90?

According to a study done by de anza students, the height for asian adult males is normally distributed with an average of 66 inches and a standard deviation of 2.5 inches. suppose one asian adult male is randomly chosen. let x = height of the individual. a) give the distribution of x. x ~ b) find the probability that the person is between 64 and 69 inches. write the probability statement. what is the probability?

Lines a and b are perpendicular. the equation of line a is y=13x+3. what is the equation of line b?