Joey drives a golf cart when he needs to monitor the security of his neighborhood. he can cover the 40 miles of streets in his neighborhood in 2 hours. what unit rate expresses the speed of joey's golf cart per hour

40/2 = 20 miles per hr

Need to see the diagram

You move the constant to the right side and change its sign to be 9z= -6 -8. that’s the first step.the second step would be calculate the difference of -8-6 to get -14. you equation should now be 9z=-14the last step is to divide both sides by 9 to get z=-14/9hope this