the sum is your answer i am going to give you some work to do too
a. turk and mcalister
b. howard, mission, and market
c. yes. since streets end some do not cross yet are not parallel to others. example: mcalister and 5th
parallel lines are lines which do not intersect ever and look a lot like railroad tracks. turk, mcalister and golden gate are examples of these.
intersect are streets which cross each other and a car on one can reach the other. howard, mission, and market intersect with 6th.
skew lines are lines which neither intersect nor are parallel. these lines exist here because some streets end and never intersect another like mcalister and 5th.
you are only given the cost not the amount of pounds.