David hikes 2 1/4 miles in 1/2 an hour. At his rate, how long will it take him to walk 18 miles

The slope of the line passing through the points (2, 7) and (-4, 8) is

Rewrite the point-slope equation in slope-intercept form: y - 3 = 2(x + 4)

1. suppose that scores on a knowledge test are normally distributed with a mean of 71 and a standard deviation of 6. a. label the curve: show the mean and the value at each standard deviation: b. if angelica scored a 76 on the test, what is her z-score? (draw her score on the curve above and label) c. what percent of students did angelica score higher than? how can you tell? d. if 185 students took the test, how many students scored higher than angelica?