8. Kate wants to run a half marathon next weekend. A half marathon is 13.1 miles. a. If she wants to run the race in 150 minutes, what rate (in minutes per mile)
should she try to maintain for the race?
b. At the 10 mile mare, Kate realizes that her total running time is 100 minutes. Has
she been keeping the pace (rate) that she intended? Explain your answer.

16. you're planning to buy a boat, a motor, and some miscellaneous boating equipment. the boat costs $325, the motor costs $225, and the equipment costs $79. if you've saved $438 toward these purchases, how much more do you need to save? a. $181 b. $281 c. $291 d. $191

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling

Aclassmate thinks that solving a system by graphing gives an exact answer when the lines appear to cross at a grid point, but only an approximate answer when they don't. explain why this isn't true.