A train left for Houston, and 5 hours later, a car traveling 74 mph tried catching up to the train. After 8 hours, the car caught up. What was the train's average speed?

Which quadratic function best fits this data? x y 1 32 2 78 3 178 4 326 5 390 6 337 a. y=11.41x2+154.42x−143.9 b. y=−11.41x2+154.42x−143.9 c. y=11.41x2+154.42x+143.9 d. y=−11.41x2+154.42x+143.9

Find the solution set of this inequality. enter your answer in interval notation using grouping symbols. |8x-4| ≤ 12

Which of the following quartic functions has x = –1 and x = –2 as its only two real zeroes?