X*2+1=10 then x=? Tell me the value of x

What is the value of x in the diagram below?

Plot the points (0,6), (3,15.8), and (9.5,0) using the graphing tool, and find the function

Fred has a spinner that is split into four equal sections: red, blue, green, and yellow. fred spun the spinner 688 times. which of the following would be a good estimate of the number of times the spinner lands on the green section? a. 269 b. 603 c. 344 d. 189