Here are 5 more questions, please help

6points possible: 3. total attempts: 5 for the data shown, answer the questions. round to 2 decimal places. x 7.3 11.7 21.7 18.8 23.2 20.7 29.7 21.2 10.6 find the mean: find the median: find the standard deviation:

Solve the following system algebraically. y = x2 – 9x + 18 y = x – 3 a. (3,1) and (5,3) b. (3,0) and ( 4,2) c. (–4,5) and (7,–10) d. (7,4) and (3,0)

Ali was paid $75 for mowing a neighbor''s yard. this is one fourth of the amount of money she earned all summer