Graph the proportional relationship where x coordinate represents minutes and the y coordinates represents beats

In the diagram, the ratio of ab to ae is (1/2) . what is the ratio of the length of to the length of ?

Find the difference (8ab+a+2) - (3ab+6)

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