A student takes a 10-question, multiple-choice exam with possible answers as a, b, c, and d for each question and guesses on each question.
(a) Find the probability of guessing 9 out of the 10 correctly. (10-pt)
(b) Find the mean (4-pt)
(c) Find the variance (4-pt)
(d) Find the standard deviation

Marcus and cody both leave the park at the same time, but in opposite directions. if cody travels 6 mph faster than marcus and after 4 hours they are 64 miles apart, how fast is each traveling? solve using rare times time = distance.

Can you me find the slope! (30 points)

20 points 1. your friend, taylor, missed class today and needs some identifying solutions to systems. explain to taylor how to find the solution(s) of any system using its graph. 2. taylor graphs the system below on her graphing calculator and decides that f(x)=g(x) at x=0, x=1, and x=3. provide taylor some feedback that explains which part of her answer is incorrect and why it is incorrect. f(x)=2x+1 g(x)=2x^2+1