What is the length of bc ? round to the nearest tenth.

6.8 cm
7.5 cm
14.5 cm
17.7 cm

10 ! a train starts from grand city and travels toward belleville 388 miles away. at the same time, a train starts from belleville and runs at the rate of 47 miles per hour toward grand city. they pass each other 4 hours later. find the rate of the train from grand city.

Mrs. gehrke said cheddar weighs 16.8 pounds. he actually weighs 15.2 pounds. what is the percent error?

Which of the functions graphed below has a removable discontinuity?